True or False: In the U.S., no pesticide can be sold or used without federal registration.

In the United States, the statement is true that no pesticide can be sold or used without federal registration. This requirement is mandated by the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), which establishes that all pesticides must undergo a thorough review process by the Environmental Protection Agency (EPA) to ensure they are effective and do not pose unreasonable risks to human health or the environment. This registration process includes evaluating the pesticide's potential impacts, labeling, and intended uses.

The law applies to all pesticides, regardless of their intended use, including those for agricultural, residential, industrial, or other applications. Consequently, a pesticide that is not registered cannot legally be marketed or applied. This rigorous process is in place to protect public health and safeguard the environment from harmful substances.