What Is the Most Humane Way to Trap Rats?

Legally, NH Fish & Game makes clear that transport and release of any trapped animal is the trapper's own responsibility, and the department does not relocate animals. Ethically and biologically, UNH Cooperative Extension explicitly advises against live-trapping and releasing wild animals miles from home, because a released animal dropped into unfamiliar territory without food, shelter, or protection typically becomes easy prey or slowly starves. For rats specifically, extension and public-health sources go further: because rats are non-native and carry disease, captured rats should be humanely killed rather than released, since releasing them can also spread disease and harm native ecosystems.

New Hampshire places no restriction on the taking of commensal rodents like house mice and Norway rats, so lethal control is legal here. That leaves a clear order: a correctly-placed instant-kill trap (most humane and practical) first, poison only as a contained professional last resort, live-catch rarely humane for rats given release realities, and glue traps — which cause prolonged suffering — as the least humane common option. If a live trap is used at all, it must be checked at least twice daily and the animal never relocated given the concerns above.