Understanding Lethal Dose 50 Percent LD50 for Toxicants

An explanation of Lethal Dose 50 (LD50) used to compare the toxicity of rodenticides and toxicants used in the control of vertebrate pests such as house mice (Mus musculus), Norway rats (Rattus norvegicus), roof rats (Rattus rattus) and deer mice (Peromyscus maniculatus) and other vertebrate pests. Understand the difference between acute doses and chronic doses and the strength and weaknesses of the LD50 data.