The Poison-Free Wildlife Act, or Assembly Bill 2552, would expand the existing rodenticide moratorium to include first-generation anticoagulant rodenticides chlorphacinone and warfarin. The state has ...

“Rat poison was intended to control pests but instead has led ... Under the bill, two first-generation anticoagulant rodenticides, chlorophacinone and warfarin, join a list of prohibited rat poisons ...

Warfarin is the active ingredient in rat poison. Random mutations in the genomes of rats mean that some rats in a population have a natural resistance to warfarin. This causes variation in the rat ...