The Environmental Protection Agency recently revised its rodenticide warning labels to clarify some instructions.
As originally printed, the labels could cause some confusion with regard to the practice of burrow baiting — sticking traps or bait into rodent dens to ensure no other animals set them off. The labels could be misconstrued as prohibiting the practice of burrow baiting near houses and man-made structures, when in reality the agency believes it's acceptable to do that.
The revised label reads: "This product may only be applied to active burrows to control Norway rats and roof rats within 100 feet of buildings and man-made structures constructed in a manner so as to be vulnerable to commensal rodent invasions and/or to harboring or attracting rodent infestations provided that infestations of these rodents have been confirmed."
As is the case with any rodenticide or insecticide, consumers should always read the labels to ensure they are using tested and approved products. The EPA regularly finds dozens of insecticides being sold that haven't been licensed for use by the agency.