Manufacturers add a bright blue triphenylmethane-type dye to baits so any subsequent observation of the carcass—can easily recognize contaminated tissue. The d

Manufacturers add a bright blue triphenylmethane-type dye to baits so any subsequent observation of the carcass—can easily recognize contaminated tissue. The dyes are large, planar aromatic molecules designed to resist rapid breakdown in the environment or the animal’s digestive tract.