Pesticide Devices: A Guide for Consumers | Pest Control and Pesticide Safety for Consumers | US EPA
"Pesticide application equipment that is sold separately from the pesticide itself is not a device or a pesticide." "The device may be “misbranded” if labels, labeling, and/or websites for devices including general or specific efficacy claims include any statement, design, or graphic representation that is “false or misleading in any particular.” "Also, please note that some state laws have requirements for devices in addition to those imposed by FIFRA. Some state governments require registration of devices, including submission and review of efficacy data and labeling, before a device can be sold or distributed"