There are environmentally safe rodent poisons. You can even make them yourself, from stuff in your pantry: http://www.ratpoisonfacts.org/low-toxicity-rodentici

There are environmentally safe rodent poisons. You can even make them yourself, from stuff in your pantry: http://www.ratpoisonfacts.org/low-toxicity-rodenticides/ http://www.ratpoisonfacts.org/low-toxicity-rodenticides/