What must be true for pesticides to be legally used on mammals?

For pesticides to be legally used on mammals, it is essential that they are registered for use on the target species. This registration process ensures that the pesticide has been thoroughly evaluated for safety and effectiveness for that specific type of animal. Regulatory authorities, such as the Environmental Protection Agency (EPA) in the United States, require extensive testing and documentation before a pesticide can be approved for use on particular mammals. This ensures that when applied, the pesticide does not pose unnecessary risks to the animals, the environment, and human health.

The requirement for registration is crucial because using unregistered products or using products in a manner not specified on their label can result in legal ramifications and harm to the ecosystem. The registration also includes instructions on application rates, safety precautions, and any restrictions on use, which are vital for safe and effective pesticide application.