Once a rodenticide is used, its effects reach far beyond rats, mice, or other pests. The poison becomes an artificial, often lethal part of the food chain and can irreversibly harm delicate ecosystems as well as domestic animals and even children. Whether it is an owl bringing a poisoned rat home to its nest, a fox swallowing a newly captured squirrel, or a neighborhood cat devouring the mouse it discovered in the basement, the use of poison simply doesn’t make sense. Not for wildlife and not for us.