A weasel raiding your chicken coop can kill an entire flock in a single night, so speed matters. The most reliable method is a small live trap, baited with fresh meat, placed directly along the path the weasel uses to enter the coop. With the right setup, you can catch one within a day or two.
Choose the Right Trap Size
Weasels are surprisingly small and slim, which means standard rodent or raccoon traps won’t work. You need a trap roughly 16 to 18 inches long and 5 to 6 inches wide and tall. These are sold as rat or weasel-sized live cage traps. A model with spring-loaded doors at both ends (dual entry) works especially well because weasels are reluctant to enter a tunnel they can’t see through. A single-door model will also work if placed correctly.
The trigger mechanism needs to be sensitive. Weasels weigh very little, sometimes under half a pound, and a stiff trigger plate may not trip when the animal steps on it. Before setting the trap, test it by pressing lightly on the plate with a finger. If it takes real pressure to close the door, adjust the sensitivity or choose a different trap.
Use Fresh Meat as Bait
Weasels are obligate carnivores, so plant-based baits like peanut butter or grain won’t reliably draw them in. The best options are bloody liver, fresh chicken entrails, or thick white fat trimmed from pork or beef. The smell of blood and raw meat is what pulls them toward the trap.
One important rule: don’t use remains from the weasel’s own kills. Leaving carcasses from a previous attack near the trap can actually encourage the weasel to keep hunting in that area rather than funneling it into the cage. Use store-bought meat or offal instead.
A surprisingly effective attractant is a few drops of inexpensive floral cologne placed near the trap entrance. Weasels are curious animals, and novel scents draw them in. Another strategy is to set a small open box with grain inside near the coop for a few days beforehand. Mice will visit and leave their scent, and a trap that smells like mice smells like dinner to a weasel.
Where to Place the Trap
Placement matters more than bait. Weasels almost never travel in the open. They stick to edges, walls, and narrow gaps. If you know where the weasel is getting into the coop, place the trap right at that entry point. If you’re not sure, look for small holes, gaps under walls, or spaces around doors. Weasels can squeeze through openings as small as one inch in diameter.
The best locations are:
- Directly inside the coop or barn, at the gap or hole the weasel is using
- Along the exterior wall of the coop, tight against the foundation
- In a corner or narrow passageway where the weasel has limited routes
Block any other entry points you find so the weasel is forced to travel past the trap. If the coop has multiple holes and you leave them all open, the animal may simply bypass the trap entirely. Stuff gaps with hardware cloth or scrap wood, and leave only one path available.
Cover the trap loosely with straw, leaves, or a burlap sack. Weasels are wary of exposed metal, and a partially concealed trap feels more like a natural tunnel. Leave the entrances clear so the doors can swing freely. Stake the trap down or weigh it with a rock so it can’t tip over if the weasel thrashes inside.
Check the Trap Frequently
Most states require you to check live traps at least once every 24 hours, and you should check more often than that. A trapped weasel left for hours in a cage will injure itself trying to escape, and in hot or cold weather it can die from exposure. Morning and evening checks are ideal, since weasels are most active around dawn and dusk.
If you catch a weasel, handle the trap carefully. They bite, and they’re fast. Keep your fingers away from the cage mesh and transport the entire trap without opening it.
Know Your Local Trapping Laws
Weasels are classified as furbearers in most states, which means trapping them is regulated. In Virginia, for example, weasel trapping season runs only from December through February. Outside of that window, a landowner can still trap a weasel on their own property if it’s actively causing damage to livestock or property, but this exception typically applies only to the landowner, not to a hired helper or neighbor.
Some states require a trapping license. Some require traps to be tagged with your name, address, or a state-issued identification number. Relocation laws vary widely: certain states prohibit releasing trapped wildlife on public land, others require you to release the animal within a set distance, and some don’t allow relocation at all.
Before you set a trap, check your state wildlife agency’s website for current regulations. The penalties for illegal trapping can include fines and loss of hunting or trapping privileges, and the rules differ enough from state to state that what’s legal in one county may not be legal in the next.
Seal the Coop After Trapping
Catching one weasel doesn’t mean the problem is over. If the entry points aren’t sealed, another weasel (or the same one, if relocated nearby) will find its way back in. Walk the entire perimeter of the coop and check for gaps. Remember the one-inch rule: if you can fit your thumb through a hole, a weasel can get through it.
Use half-inch hardware cloth rather than chicken wire. Chicken wire keeps chickens in but does little to keep predators out, since weasels can chew and claw through the thin gauge. Secure hardware cloth over windows, vents, and any openings at ground level. Bury it 6 to 12 inches below the soil line along the base of the coop to prevent digging. Pay special attention to where walls meet the floor and where pipes or wiring pass through walls, since these are common entry points that get overlooked.
A weasel-proof coop is the only long-term solution. Trapping removes the immediate threat, but the scent of chickens will continue attracting predators unless the structure itself keeps them out.