No need for chemical sprays, no mess, no odors! Completely safe for adults & children. This proven pest repeller uses advanced Ultrasonic technology to give you a “force field” of bugfree protection of up to 15 feet! Compact 3"L x 3.4"D size easily clips to clothes and lasts up to 1,600 hours! Made from durable manmade materials. Takes 1 'AA' battery available everywhere.