Thousands of European Starlings have been invading a Johnson City, TN neighborhood for many years, and the homeowners on East Holston Avenue have had it with the noise and the mess. Bird droppings rain down incessantly on cars, homes and sidewalks, which is not only unsightly but a health concern. In the winter, these bird pests travel in flocks and invade cities to get warm.

Some residents have resorted to firearms to scare birds away, but many admit it’s only a temporary solution, as the birds always come back. Experts say, starlings prefer dark, quiet places to sleep, so harassing the birds with bright lights/noises and bird distress recordings may offer relief. These tactics must be maintained for about five days to get rid of birds in any one area. Thinning out trees also helps. Here are two effective bird control measures the experts at Bird-B-Gone recommend:

Sonic Shield™--the Sound Solution to Pest Birds

The Bird-B-Gone Sonic Shield™ employs sight and sound to scare birds away from all areas of a yard and trees. It features two operating modes: a daytime mode, which combines flashing LED lights and loud barking dog sounds to scare birds; and a nighttime mode, which uses only the bright flashing LED lights. The latter mode is ideal for most areas where barking dog sounds would wake neighbors at night. Entirely portable and self-contained, the Sonic Shield™ is simple to set up wherever birds gather and roost. The device uses just four standard AA batteries, so there’s no need to run long AC cords to power it. The Sonic Shield™ can easily be mounted to a light fixture, over a door, in a tree, or on the roof. It’s ruggedly designed for outdoor use.

Bird Chase Super Sonic Scares Birds from Yards

A highly effective sound bird deterrent, the Bird Chase Super Sonic by Bird-B-Gone fully exploits a bird’s sensitive hearing and natural fear of predators. It broadcasts pre-recorded distress and predator calls for over 22 species of birds—including starlings, pigeons, crows, gulls, and grackles. You can set it to deter a specific species of bird or switch it to a "general" setting to deter multiple bird species. The device repeats the distress and predator calls every 10 minutes to keep pest birds away. It features a volume control that lets you vary the sound output—from 65-105 decibels. The sounds resemble normal bird calls to the human ear, so they won’t bother your pets or neighbors. And unlike ultrasonic devices, which emit sounds above the hearing range of most birds, the Bird Chase Super Sonic generates sounds birds can actually hear. The device is powerful enough to protect a full acre of property, so it’s ideal for most homeowners. It’s also ruggedly designed for outdoor use.

Birds are often attracted to swimming pools, spas and other water features in a backyard. The main concern with bird pests is the diseases they carry, especially those found in their droppings. Bird droppings are also very slippery when wet, which can create dangerous slip-and-fall hazards for children and even adults. While birds can be shooed away with the blast from a water hose or by banging pots and pans together, birds will invariably return when you leave.

If you have a bird problem around your pool, there are a number of things you can do to discourage pest birds from roosting and nesting near the immediate area. The first is to remove any plants that produce edible nuts, fruits and berries. You should also remove any bird feeders. And keep trees and large shrubs tightly trimmed, removing any branches that hang close to your pool. After you’ve taken these preliminary steps, you should invest in a professional bird deterrent. Here are some bird control devices the experts recommend:

Scarecrows Blast Bird Pests Away

Using a harmless blast of water to scare birds from your pool, Bird-B-Gone’s Scarecrow acts like a reliable 24/7 sentry. Any bird that enters this device’s area of protection will be showered with a “wake-up” water blast, alarming sprinkler sound, and Scarecrow’s realistic looking bird-like head. Easy to set up and use, Scarecrows connect directly to your garden hose. And each blast consumes just 2 to 3 cups of water. Scarecrows cover about 1,200 square feet with a spray that reaches out 35 feet and 45 feet wide (enough for most pools). Scarecrows are powered by a single 9-volt battery for up to 6 months, delivering over 1,000 "firings." The device’s sensitivity and coverage distance are easily fine-tuned to fit your pool’s shape and surroundings. Incidentally, kids and dogs love to play with these devices.

Sonic Bird Deterrents Scare Birds from Pools
 
While firecrackers and noisemakers may temporarily scare birds away, the more scientific (and long-term effective) approach is to intimidate birds with the sounds they dread to hear—their natural predators (like hawks and falcons). That’s where Bird-B-Gone’s Solar Bird Chase Super Sonic comes in. It broadcasts distress and predator calls birds know all too well. And they will seek the safety of someone else’s yard rather than stick around yours. The threatening birdcalls are repeated every ten minutes. The sounds emitted by Bird Chase device resemble natural birdcalls so they won’t bother your pets or neighbors. And unlike ultrasonic devices that emit high-frequency sounds birds can’t hear, the Bird Chase system creates sounds well within the hearing range of birds. Each Bird Chase device comes with a built-in speaker that will cover up to an acre.

If your school is like most, it has open courtyards, outdoor eating areas and overflowing garbage cans and dumpsters. Birds love to loiter around these areas and seek out any food scraps left under lunch tables and benches. And when they see an opportunity, they’ll dive in. After they’re stuffed, they’ll “let loose” some sizeable bird droppings. These droppings can end up on playgrounds, water faucets, lunch benches, tables and walkways. Besides being unsightly, bird droppings can carry any of 60 know diseases, including salmonella and ecoli. Children can also slip and fall on fresh bird droppings, a liability for any school district.

Chances are, you’ve put up with pest birds all year long. Fortunately, there are three simple things you can do to keep them away. And there’s no better time to implement these effective bird control solutions than during the holiday break. So act now while maintenance crews are on site to keep bird pests from flocking to your school.

Scare Birds Away with Repeller 360°

This simple bird control device sweeps pest birds off rooftops, AC units and other flat areas using sustainable wind power. Ideal for keeping larger birds like pigeons, crows, gulls, cormorants and raptors from landing, Bird-B-Gone’s Repeller 360°’s two long arms each have end sails covered with reflective “predator eyes.” When the arms spin in the breeze, the sweeping action and predator eyes combine to make an effective pest bird deterrent. Self-sufficient and easy to set up, the Repeller 360° needs no electrical power or wiring. It rotates continuously in the wind, covering a 6-foot diameter to harmlessly convince bird pests to move on.

Pest Birds Hate Bird Jolt Flat Track
 
Give pest birds a lesson they’ll never forget—a “hello” jolt of electricity when they land on your school roof, ledge or sign. Bird-B-Gone’s Bird Jolt Flat Track “educates” birds but won’t harm them. It’s like getting a shock when you touch a doorknob after walking on the carpet. The shock convinces birds to avoid any lofty areas of your school. Bird Jolt Flat Track is the #1 Specified electric track by architects and government agencies. Its patented “anti-arcing” design provides an added level of safety. It’s also crush proof and will continue to work even if stepped on by window washers or building maintenance crews.
 
Bird Spikes Create No-Landing Zone for Bird Pests
 
Whether you choose plastic or stainless steel, Bird-B-Gone Bird Spikes simply won’t allow birds to land or perch on or near them. Steel bird spikes feature rows of stainless steel spikes embedded in a U.V.-protected polycarbonate base. You can also go with Plastic Bird Spikes, which come in white, tan, gray, black, brown, brick red and crystal clear--to blend in with your school’s color scheme. Plastic spikes are made of rigid U.V.-resistant unbreakable polycarbonate, which makes them tough and economical. Neither type of bird spike will harm birds or installation crews.

If you’re like most homeowners, you want to keep the outside of your home looking fresh and clean. But pest birds can change all that. Their droppings and nesting debris can quickly deface and often damage your home. Areas most vulnerable include siding, windowsills, patio cover, decorative weather vanes, solar panels, skylights, awnings and fencing.  Birds that typically cause problems include pigeons, sparrows, starlings, swallows and gulls. To keep bird pests at bay, the bird control experts at Bird-B-Gone have four suggestions that can help.

1.    Remove Attractions. Get rid of standing water, keep trashcan lids secure, clean up any leftover food after parties or get-togethers, and trim plants and vegetation.

2.    Install Bird Spikes. Bird-B-Gone Stainless Steel Bird Spikes won’t allow pest birds to land on or near them. These humane, highly effective bird deterrents feature rows of stainless steel spikes embedded in a UV-protected polycarbonate base. This makes them highly durable and ideal for outdoor use. Bird spikes are used worldwide to keep bird pests off ledges, rooflines, eaves, windowsills, awnings and canopies. The spiked strips come in two-foot sections and three different widths—3-, 5- and 8-inch—to match the width of the “problem” area. The base of each spiked strip is just 1.5 inches wide, so it’s easily installed on narrow surfaces using screws, tie downs or glue.

3.    Install a Sonic Bird Deterrent. Bird-B-Gone’s Solar Bird Chase Super Sonic broadcasts distress and predator calls that intimidate birds. You can set it to scare any of 22 specific bird types or choose the general setting to intimidate virtually all birds. Scientifically developed with the help of ornithologists, Solar Bird Chase Super Sonic repeats these calls every 10 minutes to convince birds that dangerous predators are near. Unlike ultrasonic devices that emit high-frequency sounds birds can’t hear, the Bird Chase system is fully audible to birds, yet it won’t annoy pets or neighbors. The device comes with a built-in speaker that will cover up to an acre.

4.    Create Visual Distraction Zones. Bird-B-Gone Visual Bird Deterrents will scare birds away. The most basic is Flash Tape, a 50-foot roll of iridescent foil tape that you cut into short strips. Hung in high visibility areas, the strips crackle in the breeze and reflect sunlight to scare birds away. No less effective is the Scare Eye Diverter, a tear-drop-shaped iridescent foil deterrent emblazoned with a large “predator” eye. The same holds true for the Bird Scare Balloon, a large inflatable “beach ball” that also has a big predator eye. When the Diverter and Balloon bob and weave in the wind, birds regard them as predators. For best results, Bird-B-Gone suggests that visual bird deterrents be moved around so that birds don’t get used to them.

So, hey. You got people coming over. The boss and his family. Your mother in law. The kids’ teachers.  They’re all coming for your big BBQ or pool party this summer. You did the right thing--cleaned up your backyard, the BBQ, the pool and spa. Now you’ve got to keep it clean. So the last thing you need is a flock of birds pooping all over your yard, pool, BBQ, chaise lounges, tables and chairs.

Bird droppings are bad news, and not just for pool and spa owners who have to clean their pools and restore pH levels. Bird droppings carry diseases like salmonella. Not good if you’re having a party with lots of open food sitting around. And if you’ve ever tried to clean dried bird droppings off a patio chair or chaise lounge, you know what a pain that can be.

You can stand outside with a hose 24/7 and blast any bird that dares to enter your backyard. Or you can do the smart thing and get the latest technology in bird control—The Bird-B-Gone Bird Chase Super Sonic.

 Science Meets Bird Psychology

The Bird Chase Super Sonic has been scientifically designed to keep birds from landing, roosting and nesting near your BBQ, pool, spa, patio table, chairs, gazebo—anywhere in your backyard. How does it work? Simple. It fully exploits a bird's natural fear of predators and a bird’s acutely sensitive hearing. It broadcasts distress and predator calls (falcons and hawks) that signal bad news for birds. The little critters can recognize and remember these sounds. They can also process sounds 10 times faster than we can. So in the time it takes us to hear one sound, birds could hear up to ten separate notes. Some birds, like pigeons, hear much lower sounds than we can. Like humans, their hearing is most sensitive between 2,000 Hz and 4,000 Hz. Which is why ultrasonic bird deterrents seldom if ever work. Birds can’t hear them. They just annoy the heck out of dogs and cats.

Deterring All Manner of Birds

The Bird Chase Super Sonic is extremely versatile. It emits distress and predator calls for as many as 22 types of birds. The calls resemble normal bird calls to the human ear, but strike fear in birds. That means they won’t annoy your pets, neighbors or party guests. The bird calls are repeated regularly--about once every 15 minutes. So any pigeons, crows, starlings, swallows, gulls, woodpeckers, sparrows, grackles, cormorants or most other birds within earshot will not want to hang around. The Bird Chase Super Sonic sound bird deterrent covers a wide area—up to an acre. If you have a big spread, you can add more satellite speakers to cover up to five acres. The Bird Chase unit is ruggedly constructed of UV-protected materials (sun & weather resistant) to last for years outdoors.

While the sounds of birds chirping by your window may be pleasant, the damage birds leave behind may not be. Birds can ruin the appearance of your front porch, back patio, gazebo, pool or spa. They can peck and nest under your roofing tiles causing leaks. Bird droppings eat into paint, wrought iron, patio furniture, cushions and BBQs.

Cleaning bird droppings can get very messy. Everything you wash them off with should be disinfected or thrown away. If you try to simply brush droppings off when they’re dry, you'll aerate the germ-filled dust, which can carry some very nasty diseases—like salmonella.

So how do you keep birds away this summer—without harming them? One very effective and humane solution uses a sound approach. It’s called the Bird Chase Super Sonic.

The Science of Sonic Bird Deterrents

Scientifically designed to keep birds from landing, roosting and nesting on your property, the Bird Chase Super Sonic fully exploits a bird's heightened sense of hearing and its natural fear of predators. Birds can recognize and remember sounds in absolute pitch (the ability to reproduce a tone without reference to an external standard). Birds can also recognize 'timbre' (a fundamental note combined with harmonies). And birds hear shorter notes than humans. We process sounds in bytes about 1/20th of a second; birds just need 1/200th of a second. So in the time it takes humans to hear one sound, birds hear up to ten separate notes. Some birds, like pigeons, hear much lower sounds than humans. One thing birds have in common with us is range of hearing, which is most acute between 2,000 Hz and 4,000 Hz.

Using Distress and Predator Calls to Deter Birds

The Bird Chase Super Sonic can broadcast the distress and predator calls for 22 different species of birds. This includes the sounds of Peregrine falcons (a pigeon's dreaded enemy) defending their territory. Or the sounds of predator hawks screeching and gulls under attack, sounds that strike fear in the hearts of starlings and seagulls. Which means the Bird Chase sound bird deterrent can be set to deter virtually any bird that has become a problem on your property--pigeons, crows, starlings, swallows, gulls, woodpeckers, sparrows, grackles, cormorants and many others. And since it continually alters the pitch, frequency, timing and intensity of these sounds, the "threat" is kept fresh and alive to deter birds that may quickly get used to repetitive sounds. The distress and predator calls are repeated regularly--about once every fifteen minutes.

Non-Annoying to Humans and Pets

Another key advantage of the Bird Chase device is that the sounds it emits resemble normal bird calls to humans. And pets aren’t bothered by them. What’s more, unlike ultrasonic bird deterrents that emit sounds birds can’t hear and do annoy pets, the Bird Chase unit is fully audible to all birds and thus very effective.

With bird season right around the corner, the one bird you definitely want to deter is the woodpecker. While it’s interesting to watch them hammer holes in trees, it’s not so interesting when they’re turning your home siding into Swiss cheese. Or when they’re pulling the insulation out of your exterior walls to make room for nests.

The time to install woodpecker deterrents is before the birds arrive, not after. Once your siding and decorative beams are riddled with holes, you’re left with expensive replacement costs. And like a woodpecker, you’ll be beating your head against the wall for not being proactive about woodpecker control.

Your neighbor may have told you that woodpeckers are looking for harmful bugs when they peck holes in your siding.  But according to the experts, this is the case less than 10 percent of the time, and when they do dig for bugs, the insects are usually harmless to wood or siding.

Woodpeckers are not too particular about what they peck. They’ll “ventilate” mahogany siding, plywood, beams, plastic guttering, light posts, even synthetic stucco finishes.

You may be tempted to shoot the little peckers, but be warned: destroying their nests, or using poisons are cruel methods are illegal in many areas. Here are some woodpecker deterrents that are both humane and effective:

Lightweight Plastic Bird Netting

Ideal for physically denying specific areas of your home from woodpecker attacks, Lightweight Plastic Bird Netting has been proven to work in homes and businesses around the country. This bird netting comes in a number if mesh sizes. For woodpeckers, the 3/4-inch mesh netting is most often recommended. This netting even comes in a variety of colors to match the exterior color of the structure. Used as a woodpecker deterrent, the netting is best installed in overhanging eaves, patio covers or other elevated areas of a structure. 

Woodpecker Deterrent Kits

Packed with everything you need to get rid of woodpeckers, Woodpecker Deterrent Kits include a Bird Repeller Balloon, 50 feet of Flash Tape, and mounting hardware. The Flash Tape Banners rattle in the breeze and reflect sunlight to constantly distract and annoy the birds. Bird Repeller Balloons are covered with large Cyclops “predator eyes” and whip about in the breeze to further distract the birds. All  you have to do is move these visual deterrents around from time to make woodpeckers believe they constitute a real threat.

BeakGuard Woodpecker Deterrent

An innovative development from bird control experts, BeakGuard Woodpecker Deterrent is an elastomeric acrylic finish that conveys a warning signal to woodpeckers that discourages them from pecking your wood. The compound is harmless to woodpeckers and other birds. BeakGuard covers latex-painted surfaces, wood, fiber-cement, stucco, aluminum or vinyl. It leaves a durable, color fast, vapor permeable finish that resists dirt and harsh weather. It’s easily applied with a brush, roller, paint pad or power sprayer. And one gallon covers about 180 square feet.

The pigeons are coming. So are blackbirds, starlings, house sparrows and crows. They’ll be invading your property en masse as bird season approaches. Will you be ready to get rid of birds when they arrive?

Prepare now or risk having your home invaded by birds.  Your cars will be spotted with bird droppings. So will your windowsills and patio furniture. Larger pest birds will tear apart your roofing shingles, causing leaks.  Smaller birds will build nests in your rain gutters, causing water to back up under your roofing tiles and, once again, you’ll have a leaking roof. Birds large and small will contaminate your pool and spa, so you’ll have to drain and clean them—not a pleasant thought.

Unless you have bird control devices in place, it will become increasingly difficult to get rid of pest birds. The temptation will be to use lethal means—like poisons or pellet guns—or stop-gap measures like water hoses and firecrackers.  Eventually, under pressure from your kids and neighbors, you’ll agree to more humane bird deterrents. Devices that actually work. Here’s what the pros recommend:

Scarecrows  for Pools, Spas and Gardens

Highly recommended for deterring all types of birds from areas where the presence of water is tolerated, Scarecrows are motion-activated sprinklers that spray a harmless but persuasive blast of water at any bird that wonders into its zone of protection. Scarecrows hook up to any standard garden hose and will guard a 1,200-square-foot area (or a 35-foot by 45-foot wide shape). The Scarecrow’s sensitivity and coverage area can be easily adjusted to suit the needs of your garden, pool or spa.

Bird Spikes for Roofs & Patio Covers

Birds usually seek a high perch from which to observe before they dive bomb your pool, spa, patio tables or car.  Bird Spikes deny them that perch. Ideal for larger birds like pigeons and crows, Bird Spikes are harmless to birds, people and pets. They have earned the approval of the U.S. Humane Society and PICAS (Pigeon Control Advisory Service). The spiked strips come in rigid unbreakable polycarbonate (plastic) or durable stainless steel. Gutter spikes are also available to keep birds out of your rain gutters. All are easy to install using glue, screws, clips or tied downs.

Balloons  and Diverters  for Trees

Known as Visual Bird Deterrents, Reflective Bird Diverters and Predator Eye Balloons bob and wave in the breeze to get rid of birds through intimidation. Diverters are tear-drop shaped panels covered with a big predator eye. They are hung in various lengths and spaced 2 to 3 feet apart. Predator Eye Balloons are covered with huge predator eyes. Look for visual deterrents made of weather-resistant vinyl plastic. For best results, it’s best to move these bird deterrents around often, or most birds will eventually get used to them as a non-live object to be ignored.


 

Many homeowners have problems with birds around the outside of their garage. That’s because, if a garage is not attached to the home, you won’t hear birds pecking and nesting on rooftop areas, or even the gutters of a garage. 

Bird droppings, debris and other nesting materials can accumulate to do long-term damage to the roof and other areas of your garage.  Unless you deter them with effective bird control devices, birds will eventually consider your garage a safe haven and gather in increasing numbers.  Keep in mind that it costs just as much to repair a garage  roof as it does the roof on your home. And cleaning bird nests and debris out of rain gutters around your garage is no less of a chore than it is for gutters that surround your home

Fortunately, there are a number of humane and effective bird deterrents that you can use to keep birds away from your garage. Here's what the pros recommend.

They’ll slip ‘n slid on Bird Slope

Easy to install, Bird Slope consists of slippery PVC panels that won't allow birds to get a solid footing under the eaves of your garage.  After a few frantic tires to land or perch, birds give up and move on to your neighbor’s garage. The best bird slope panels are UV protected and sun- and weather-resistant to last longer--a good idea if you live in a severe weather area. Bird slope works against all types of birds--swallows, starlings, pigeons, etc. The panels blend in with most architectural styles and even come in two colors--stone and grey.

They can’t penetrate Garden Bird Netting

Drape this lightweight, easy-to-handle mesh along the sides of your garage and forget about pest birds. Garden Bird Netting comes in 14 x 100-foot and 14 x 200-foot rolls and is easily cut to the size you need. It comes in three "mesh" sizes--1/4", 1/2" and 3/4". Use the bird netting clips that the manufacturer recommends to streamline installation. The best netting is made from durable, UV-protected polypropylene.

Copper Stuf-Fit Mesh—for small holes

If your garage has lots of little crevices,  holes and nooks where birds can settle in, Copper Stuf-Fit mesh is what you need. The mesh comes in 20-foot and 100-foot roles and can be easily “formed” into the shape you need to block out even the most determined bird. This handy mesh is also ideal for keeping birds from working their way  under roofing tiles, retractable awnings, and where pipes enter siding or foundations.

No Nasty Nest—for Swallows

If you’ve got swallow nests covering the sides of your garage,  you need No Nasty Nest. This hanging "twine" bird deterrent makes it a real chore for birds to gain access to nesting sites. Installation is a snap. Each strip of No Nasty Nest features a self-adhesive back for fast installation on eaves, entryways and other elevated exterior areas of your garage.

by Alex A. Kecskes

Tired of swallows building mud nests in the corners of your front porch? Had it with birds nesting in attics, eaves, vents and awnings?  Fed up with trying to wash bird nests and their droppings off your walkways, lawn furniture, BBQ and cars? And even after you do, the stains remain! You’re not alone.  Thousands of property owners across the country face the same dilemma. 

Birds generally build nests that are inaccessible, hidden, or camouflaged. Though in some cases, birds will build nests on top of chimneys. They like the heat produced by chimneys. Other birds are drawn to a chimney’s cavity shape, which they find ideal for nesting.

If you have a flat “under-hang” over your porch, it makes an ideal sheltered spot for birds to nest, and it can be nearly impossible to get rid of birds once they settle in. No matter how many times you knock down their nests, they’ll come back.

There are lethal ways to keep pest birds from nesting on your property. But you should be warned that the Migratory Bird Treaty and Endangered Species acts prohibit the trapping, possession, or killing of most birds, their eggs and nests without a permit. Only house sparrows, starlings and pigeons are unprotected by state or federal law; however, local ordinances may still protect these birds. So check with local authorities before you take action against birds or their nests.

Your other alternative is to use humane and non-lethal bird deterrents to discourage nesting.  One property owner hung a series of small mirrors under the eaves of his home where pest birds often chose to nest. When birds came to build a nest, they saw their reflection, got tricked into thinking another bird had already claimed the space, and moved on. Of course, there are other equally effective bird deterrents if you don’t fancy covering your house with mirrors.

To keep swallows, starlings, pigeons, seagulls and other pest birds from nesting on ledges, eaves, beams and similar areas, there's the Bird Slope. Birds slip and slide right off these angled, slippery PVC panels. And if they can’t get a foothold, they soon get frustrated and leave.  The best bird slopes are U.V. protected to stand up to extended periods of weathering and sunlight. They’re easily mounted on the underside of eaves with special mounting clips. Some bird slope panels have a "snap-on" extender to streamline installation on wider ledges and coverage areas. Mounting clips are also available for vertical installation on the sides of buildings. You should use the “end caps” provided by some manufacturers to keep birds from getting behind the sloped panels. Architects like to use these sloped panels because they are less visually obvious that other bird deterrents, and because they come in stone and grey colors to better blend in with a building’s color scheme.

To discourage pest birds from building nests atop chimneys, install stainless steel bird spikes. They prevent birds from landing. And if they can’t land, they can’t build a nest. The spikes come in 3-, 5- and 8-inch widths. They’re easy to install and you’ll typically only need a single strip of spikes to cover your entire chimney.

To keep birds from building nests on patio covers, awnings, gazebos and other flat surfaces, some homeowners have had considerable success with Bird Spiders. These versatile bird-proofing devices feature stainless steel “arms” that whip around in the breeze. No bird in her right mind would build a nest near such a threatening display. Spiders come in various sizes--usually 2-, 4-, 6- and 8-foot designs to provide increasingly wider diameters of deterrence. Spiders do a nice job in discouraging pigeons, seagulls, and larger birds. They are easy to install and move, and there’s nothing to replace or maintain once they’re up. The best spiders will feature a U.V.-protected polycarbonate base and come standard with a glue-on base, allowing them to be glued down permanently to flat most surfaces.