Bat Removal Laws in Wyoming: What Homeowners Need to Know Before Exclusion
August 18, 2026
Finding bats roosting in your attic in Wyoming triggers a different set of rules than dealing with mice or raccoons. Bat removal laws in Wyoming treat these animals as protected nongame wildlife, and the Wyoming Game and Fish Department (WGFD) regulates how, when, and by whom bats can be excluded from a structure. Skipping the legal steps can mean harming a federally protected species or running afoul of state wildlife regulations without realizing it.
This guide walks through what the law actually says about removing bats from a home in Wyoming, including timing restrictions, approved methods, and when a permit becomes necessary.
Are Bats a Protected Species in Wyoming
The Wyoming Game and Fish Department is responsible for the conservation of bats in the state. Wyoming is home to 18 species of bats that sometimes cross paths with humans. Most of these species are classified as nongame wildlife, and species of special management interest in the state include the black-footed ferret, wolverine, and several bat species.
One species carries extra weight under federal law. The northern long-eared bat, Myotis septentrionalis, is managed cooperatively with the U.S. Fish and Wildlife Service on federally listed species, including the black-footed ferret, Canada lynx, northern long-eared bat, Preble’s meadow jumping mouse and Wyoming toad. A separate pest control resource confirms that some species, like the northern long-eared bat, are federally protected under the Endangered Species Act, which means harming or killing one carries federal consequences beyond anything Wyoming imposes on its own.
White-nose syndrome (WNS) is reshaping how seriously the state treats bat protection. The disease is caused by the fungus Pseudogymnoascus destructans, and wildlife researchers have confirmed the presence of white-nose syndrome in bats at Devils Tower National Monument, the first confirmation of WNS in the state. Not every species reacts the same way: white-nose syndrome affects many small-bodied, hibernating species like the little brown bat with very high mortality rates, while other species are less affected, such as Townsend’s big-eared bat, which can hibernate under different conditions. Because of that vulnerability, caves known to contain bats during the critical hibernation and maternity seasons may be closed to the public in either the summer or winter months, and cooperation with those closures matters for conservation.
Key Insight: Not every bat you encounter in Wyoming is federally endangered, but state regulations treat nearly all bat species as protected nongame wildlife. That distinction shapes almost every rule that follows.
Is It Legal to Remove Bats From Your Home in Wyoming
Removing bats from your home is legal in Wyoming, but how you do it determines whether you are within the law. Wyoming Game and Fish Department regulations prohibit killing or harming bats without proper permits. That single rule is the foundation of every bat removal job in the state, whether you handle it yourself or hire a licensed operator.
State regulation backs this up directly. The purpose of the nongame wildlife take regulation is to govern and regulate the take of nongame wildlife from within the state of Wyoming, and such in-state take may require a permit. Bats fall under this framework as mammals not otherwise classified as big game, furbearing, or predatory animals.
The practical takeaway is that exclusion, not extermination, is the legal path forward. Effective bat removal isn’t about trapping or killing, it’s about exclusion. The goal is to let bats leave on their own and then prevent them from getting back in. This approach keeps you compliant with both state nongame wildlife rules and federal protections for species like the northern long-eared bat. Homeowners dealing with other regulated wildlife in Wyoming, such as those researching hunting laws in Wyoming, will recognize the same underlying principle: taking wildlife without following the correct process invites legal risk even when the animal is a nuisance.
Bat Exclusion Season and Restricted Dates in Wyoming
Timing is one of the most important legal and practical considerations in Wyoming bat removal. The state does not publish a single hard-coded “bat exclusion season” statute the way some states do, but WGFD guidance makes the restricted window clear through maternity biology rather than calendar dates.
The Nongame Section can advise homeowners in excluding bat colonies from inappropriate places such as attics, and whenever possible, advises doing so outside of the maternity season, as this minimizes the risk of direct contact with a bat and bat mortality. The reasoning comes down to flightless young. Over the summer, females may become separated from their young, called pups, by a one-way door, and since the pups can’t fly and need to nurse several times each night, they will not survive alone.
| Season | Exclusion Status | Why It Matters |
|---|---|---|
| Spring (maternity onset) | Avoid exclusion | Pregnant females begin forming maternity colonies |
| Summer (maternity season) | Restricted / not recommended | Flightless pups can be trapped inside and die without their mothers |
| Late summer to early fall | Recommended window | Pups have fledged and can fly out with adults |
| Winter (hibernation) | Avoid exclusion | Bats may be torpid or hibernating inside structures |
WGFD’s own field advice supports the fall timing: if a bat is inside unused parts of buildings, like the rafters of a shed, barn or attic, installing one-way doors for about a week will let the bats fly out but not back in, and they are best-used in the late summer or early fall. Homeowners comparing this to wildlife removal laws in North Carolina or wildlife removal laws in Virginia will notice a similar pattern nationwide: most states discourage exclusion during the maternity season regardless of exact statutory language.
Pro Tip: If you discover a bat colony in spring or summer, wait until late summer or early fall to install exclusion devices unless the colony poses an immediate health risk. Acting too early can orphan pups and complicate the project.
Approved Bat Removal Methods in Wyoming
Wyoming law and WGFD guidance both point toward non-lethal exclusion as the only approved method for resolving a bat problem in a home. The process typically follows a predictable sequence.
- Confirm entry points. Inspect the attic, soffits, and roofline at dusk to watch where bats exit the structure.
- Install one-way exclusion devices. These allow bats to leave but prevent re-entry, and are left in place for about a week to allow the entire colony to exit.
- Seal remaining gaps. Once the colony has fully vacated, close off other potential entry points to prevent re-colonization.
- Offer an alternative roost. Installing a bat house nearby gives displaced bats somewhere to go, which supports local insect control without inviting them back into the attic.
Trapping, poisoning, or attempting to kill bats are not approved methods, and doing so risks violating the same rule that Wyoming Game and Fish Department regulations prohibit killing or harming bats without proper permits. If a bat somehow ends up loose inside your living space rather than the attic, WGFD recommends a simpler fix: if a bat gets into a house, open a window, minus the screen, and shut off the room overnight.
Because gear used in caves and roosting sites can spread white-nose syndrome between locations, it is important that caving gear be decontaminated before and after entering any cave in the state. The same caution applies loosely to attic exclusion work involving heavily infested roosts; homeowners in bat-heavy regions researching wildlife removal laws in Wisconsin or wildlife removal laws in Minnesota will find similar decontamination advice tied to WNS-affected states.
Do You Need a Permit to Remove Bats in Wyoming
Whether you need a permit depends entirely on what you’re doing to the bats, not just whether bats are present in your home. Straightforward, non-lethal exclusion using one-way doors generally does not require an individual take permit, since no bat is captured, killed, or possessed in the process. Anything beyond that shifts the legal picture.
| Activity | Permit Typically Required | Governing Framework |
|---|---|---|
| One-way door exclusion | No, for standard homeowner exclusion | General nongame wildlife guidance |
| Capturing or possessing a live bat | Yes | Possession of live warm-blooded wildlife regulations |
| Killing or intentionally harming a bat | Yes, and often prohibited | Nongame wildlife take regulation |
| Rehabilitating an injured bat | Yes | Wildlife rehabilitation permit |
| Scientific study or educational handling | Yes | Special purpose permit |
State regulation spells this out for anything beyond passive exclusion. Unless otherwise specified, mammals defined as nongame wildlife in this regulation may be taken for scientific research, education or special purposes with a permit issued in accordance with Commission Regulation Chapter 33, Scientific Research, Educational or Special Purpose Permits. Possession carries its own separate requirement: prior to importing, possessing or transporting live wildlife in Wyoming, a permit is required.
This also covers the temptation to “help” a bat by keeping it. People should not attempt to rehabilitate a bat nor keep it as a pet, since that is illegal without a permit from Game and Fish. If your situation goes beyond simple exclusion, such as a bat that’s injured, sick, or displaying unusual behavior, contacting WGFD’s Nongame Section directly is the safest way to confirm what’s legally required before you act. Comparing permit structures with wildlife removal laws in Arizona or wildlife removal laws in California shows this tiered approach, permit-free exclusion versus permitted take, is common across states with protected bat populations.
What to Do If You Find a Bat Inside Your Home in Wyoming
Your response should change depending on how and where you encounter the bat. The first rule applies in every scenario: do not touch or handle bats, since bats can transmit rabies prior to having symptoms, and, like any wild animal, can act aggressively if they feel threatened.
- A bat is loose in a room: Open a window with the screen removed and leave the room quietly overnight so the bat can find its own way out.
- A bat is sleeping during the day: It’s not unusual to see a bat roosting, or even flying, in daylight, since an active daytime bat is likely searching for a place to sleep, and if a bat is spotted sleeping, leave it alone.
- A bat is flying outdoors in winter: Bats flying during the winter could be a sign of white-nose syndrome, a disease in bats, so report sightings to Game and Fish.
- A bat appears injured: If you find an injured bat, call Game and Fish.
Possible physical contact changes the response entirely. Anyone bitten by a bat should seek medical attention and try to safely contain the bat for testing. This is not optional guidance, since untreated rabies exposure is fatal once symptoms appear.
Important Note: This article provides general legal and safety information, not medical advice. If you or a pet has had possible contact with a bat, contact a healthcare provider or veterinarian immediately rather than relying solely on this guide.
Like all mammals, bats can carry rabies, and anyone having possible direct contact with a bat should contact a healthcare professional. If a bat is found dead outside your home rather than inside it, handling and disposal follow a similar don’t-touch principle to the one covered in roadkill laws in Wyoming, where direct contact with wildlife carcasses carries its own precautions.
Penalties for Illegal Bat Removal in Wyoming
Violating Wyoming’s nongame wildlife regulations by killing, trapping, or possessing bats without authorization exposes you to state enforcement action under the Game and Fish Commission’s regulatory authority. Wyoming Game and Fish Department regulations prohibit killing or harming bats without proper permits, and wardens can cite violations discovered during routine investigations or reports from neighbors and pest control companies.
The stakes rise sharply when a federally listed species is involved. Because some species, like the northern long-eared bat, are federally protected under the Endangered Species Act, harming one can trigger a separate federal investigation and penalty process independent of anything Wyoming pursues at the state level. Homeowners who hire unlicensed operators to “solve” a bat problem quickly, particularly through poisoning or sealing bats inside a structure, bear legal responsibility alongside the contractor.
Common Mistake: Sealing every entry point before bats have had a chance to leave traps the colony inside, which can constitute illegal killing or harming under state nongame wildlife rules, even if it wasn’t intentional.
Because exact citation amounts and enforcement outcomes vary by circumstance and are determined case by case, homeowners uncertain about a specific situation should contact WGFD’s Nongame Section or a regional game warden before proceeding. Getting written or verbal confirmation of your planned approach is a low-cost way to avoid an expensive mistake.
Wyoming’s approach to bat removal ultimately balances two goals: protecting a declining group of species from white-nose syndrome and habitat loss, and giving homeowners a legal, humane path to reclaim their attics. Following the exclusion timeline, using one-way doors instead of lethal methods, and checking in with WGFD when a situation falls outside routine exclusion keeps you on the right side of both state and federal law.