The most effective way to remove squirrels from an attic is a combination of trapping or exclusion at their entry point, followed by sealing the hole with chew-proof material so they can’t return. Several trap styles work well, but your results depend more on where you place the trap and whether you’ve identified every entry point than on which brand you buy.
Types of Squirrel Traps That Work in Attics
Single-animal live cage traps are the most common choice for both professionals and homeowners. These are simple metal cages with a trigger plate inside. When the squirrel steps on the plate or tugs the bait, a door snaps shut behind it. They’re widely available at hardware stores and online, typically in sizes around 18 to 24 inches long. You’ll need to check them at least once or twice a day, since a trapped squirrel left in a cage will become stressed, dehydrated, and may injure itself trying to escape.
Repeater traps (also called multi-catch traps) are a step up in efficiency. Instead of catching one squirrel at a time, a repeater mounts directly over the hole squirrels are using to enter and exit your attic. Once you seal off all other routes, squirrels heading outside for food and water have no choice but to pass through the trap. A one-way door lets them in but not back out. These can hold multiple animals at once, sometimes six or more, making them ideal when you’re dealing with a family of squirrels rather than a lone intruder.
One-way exclusion doors work on the same principle as repeaters but skip the cage entirely. The device mounts over the entry hole and lets squirrels push their way out through a spring-loaded flap. Once outside, they can’t get back in. Many wildlife professionals consider this the single best method for clearing squirrels from an attic because it doesn’t require baiting, daily trap checks, or figuring out what to do with a live animal. The squirrels simply leave on their own schedule.
Lethal body-grip traps (sometimes called connibear traps) exist but are rarely appropriate for attic use. They pose risks to pets and non-target animals, and many states restrict or prohibit them in residential settings.
Where to Place Traps for the Best Results
Trap placement matters more than bait selection. Squirrels are creatures of habit. They follow the same routes between their nesting area in your attic and their outdoor feeding spots, so your trap needs to sit directly in that path rather than in a random corner of the attic.
Start by finding the entry point. Look for chew marks, grease stains, or fur around the roofline, soffits, gable vents, and where utility lines meet the house. You may also spot daylight coming through a gap from inside the attic. Once you’ve found the hole, you have two options: mount a repeater trap or exclusion door directly over it, or place a single cage trap along the travel route between the entry point and wherever the squirrels are nesting or feeding. Setting a cage trap right next to the entry hole, facing the direction squirrels travel, consistently outperforms placing it deeper inside the attic where squirrels spend less active time.
If you’re using a cage trap on the roof or near a soffit, make sure it’s secured so it won’t fall. A squirrel thrashing inside a trap that tumbles off a roof creates a bigger problem than the one you started with.
Best Bait for Attic Squirrel Traps
Peanut butter with whole peanuts still in the shell is the standard bait, and there’s little reason to experiment beyond it. Spread peanut butter directly on the trigger plate, then press a few whole peanuts into it so the squirrel has to tug and work to free them, which triggers the door. Place one or two peanuts at the entrance of the trap as well to draw the squirrel in.
Sunflower seeds, walnuts, almonds, and fruit also work. But there’s one situation where fruit is the better choice: if a squirrel is stuck inside a wall void or sealed area and won’t come out, it’s likely getting thirsty. Oranges or other moisture-rich fruit can lure a dehydrated squirrel toward the trap when nuts alone won’t.
If you’re using a repeater trap or one-way door mounted over the entry hole, you don’t need bait at all. The squirrels’ own need for food and water drives them out through the device.
Avoid Trapping During Birthing Season
Squirrels typically give birth twice a year, with litters arriving in March through April and again in late August through September. The gestation period is about 44 days, so mothers are denning in attics well before the babies arrive. If you trap or exclude a mother squirrel while her babies are still inside, the young will die. They are completely dependent on her for survival, can’t leave the nest on their own, and sometimes fall into wall voids where they become unreachable.
If you hear squirrels in your attic during these months, inspect carefully before sealing any holes. Never close an entry point while a mother or dependent young are still inside. If you find babies, the safest approach is to wait until they’re mobile enough to leave with their mother (usually 10 to 12 weeks old) or to contact a wildlife control professional who can remove the entire family together.
Legal Restrictions on Trapping and Relocation
Before you trap a squirrel, check your state and local wildlife regulations. Laws vary significantly. Some states allow homeowners to trap nuisance squirrels on their own property but prohibit relocating them. Michigan, for example, does not authorize live capture and release of squirrels except for permitted research. In many jurisdictions, releasing a trapped squirrel on public land or someone else’s property is illegal. Some states require you to release the animal on the same property where it was caught, which obviously defeats the purpose if the animal just returns to your attic.
This is one reason exclusion doors are often the simplest legal option. You’re not capturing or transporting any animal. You’re simply letting squirrels leave and preventing re-entry.
Sealing Entry Points After Removal
Trapping without sealing is a temporary fix. New squirrels will find the same holes, sometimes within days. Once every squirrel is out, seal all entry points with materials they can’t chew through. Galvanized steel mesh, hardware cloth, and steel wool are the go-to options. Wood, plastic, and foam sealant alone won’t hold. Squirrels gnaw through them easily.
For larger openings, layer hardware cloth over the gap and secure it with screws rather than staples. Vulnerable spots like chimney openings, gable vents, and soffit joints should get dedicated covers: chimney caps, metal vent screens, or wire netting. Caulking works as a supplement to seal small gaps around the edges of metal patches, but it should never be your primary barrier.
Cleaning Up After Squirrels Leave
Squirrel droppings, urine, and nesting material in your attic aren’t just unpleasant. They carry real health risks. Rodent waste can harbor pathogens that cause leptospirosis and other infections, and disturbing contaminated material sends particles airborne where you can inhale them.
Before you start cleaning, ventilate the attic by opening windows or vents and positioning a fan to blow air outward. Wear an N95 respirator (not a cloth mask), nitrile or latex gloves, safety goggles, and disposable coveralls if you have them. Never sweep or vacuum dry droppings as a first step. Instead, mist contaminated areas with a solution of one part bleach to nine parts water and let it sit for 10 to 15 minutes. This dampens everything so particles don’t become airborne when you handle them.
Scoop up droppings and nesting debris with a dustpan or small shovel and seal everything in heavy-duty plastic bags. Wipe down exposed wood surfaces like joists and beams with disinfectant. If insulation or cardboard storage boxes are heavily soiled, replace them entirely rather than trying to clean porous material. A final pass with a HEPA-filter vacuum picks up remaining dust. Empty the vacuum contents into a sealed bag before throwing it away.
In the days after cleanup, watch for symptoms like fever, muscle aches, shortness of breath, or unusual fatigue. These are rare but can signal exposure to rodent-borne pathogens.