Environmental hazards of Amdro and Logic. Environmental hazards can be assessed on the basis of toxicity of the product, the range of organisms affected, and product accumulation in the environment. Lethal dosage is abbreviated as LD50. The active ingredient in Amdro is approximately eight times more toxic than that of Logic. As purchased, the commercial product Amdro is approximately seven times more toxic than Logic.
Smaller animals are in greater danger of ingesting a lethal dosage.
Logic, by virtue of its lower toxicity level, would need to be consumed at a much higher rate to produce comparable effects. In addition to killing fire ants, Amdro kills harvester ants. At a higher concentration, the active ingredient in Amdro kills cockroaches. When used as recommended, Logic affects only ants, including harvester ants and other ant species that compete with fire ants. Logic is also toxic to fish.