Insect Euthanasia

Insect euthanasia is the practice of killing insects kept in laboratories, schools, as pets, or raised as food, in a way intended to minimize or eliminate pain and distress. The subject has historically received far less attention than vertebrate animal welfare: unlike vertebrate research, which in the United States typically requires institutional approval, the use of invertebrates has few formal guidelines, and many research papers do not record how their insect subjects were killed. Recommended laboratory methods include overdose with pentobarbital and injection of potassium chloride, with inhaled anesthetics, pithing, chemical agents, and freezing used as adjuncts, while the use of carbon dioxide remains uncertain. In farm and commercial settings, insects are killed by mechanical shredding, freezing, or direct heating such as roasting, frying, or boiling. Because insect sentience and pain perception remain uncertain, more humane approaches are recommended as a precaution.