All pesticides are poisonous.
However, some are more poisonous than others. The product label usually states the toxicity of the pesticide. Accordingly, those of medium toxicity carry less severe warning statements. Oral LD 50 is the measure of toxicity of the pure pesticide when applied internally to the test animal. Dermal LD 50 is the measure of toxicity of the pure pesticide when applied to the skin of the test animal.