Install two-step predator-proof latches on all doors

Replace simple latches with two-step mechanisms on every coop door, nest box lid, and run gate. Raccoons have remarkable manual dexterity and can open hook-and-eye latches, lift simple slide bolts, and turn basic knobs within minutes. A predator-proof latch must require two simultaneous actions to open — such as lifting and sliding, or squeezing and pulling — which raccoon paws cannot perform together.

Why It Works

Raccoons are the most common nocturnal predator of backyard ducks in suburban areas and are responsible for the majority of overnight flock losses. They can solve any single-action latch quickly. Two-step latches exploit the limitation that raccoons cannot coordinate two different motions simultaneously. Carabiners, spring-loaded barrel bolts, and hasp-and-padlock combinations all require this dual action.

Tips

• Test every latch with one hand and a closed fist — if you can open it that way, a raccoon can too
• Carabiners ($1–2 each) are the cheapest effective predator-proof latch
• Check latches weekly for loosening, rust, or wear
• If bears are present in your area, use padlocks — bears can defeat most latches through brute force
• Don't forget nest box lids and pop doors — these are commonly overlooked entry points