Insect euthanasia is the process of killing insects "in a way that minimizes or eliminates pain and distress." It may apply to animals in the laboratory, schools, as pets, as food, or otherwise. Euthanasia of insects and other invertebrates has historically received limited attention. While vertebrate animal experimentation typically requires approval by an Institutional Animal Care and Use Committee in the United States, use of invertebrate animals has few guidelines, and many research papers make no mention of how their invertebrate subjects were killed.