I am working on a project in Canada where the Pest Management vendor uses a product called "Detex Blox". Detex Blox are a non-toxic rodent bait that contains no active ingredient and are only used to determine whether or not rodents are present. They are contained in a secured bait station. The reference guide states that "rodent baits are not considered least toxic under any circumstance because of their high toxicity". Where this contains no active ingredient and poses no threat, am I safe in using it on-site? Or does notification need to be sent?