Check out the YouTube videos. using baking soda to kill mice rats and squirrels. They bloat up from the soda and can't expel it from their system. It is pet friendly as your pets or other predictors will not affected like other poisons.
BAKING SODA: Ultimate Pest Control For FLEAS, MICE, RATS, COCKROACHES, ANTS, BEDBUGS, CENTIPEDES
https://www.youtube.com/watch?v=EM-nxb9c9uU
