Captured mice and rats can be kept calm by placing a towel over the trap. Release them within 100 yards of where they were trapped. (Rodents can also be humanely euthanized by a veterinarian or at a local animal shelter.) Releasing a mouse or rat into a strange area will almost surely result in the animal’s death because relocated animals don’t know where to find adequate food, water, or shelter and often become weak and succumb to predation or foreign parasites or disease against which they lack natural immunity.
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Europe/London