The Ultimate Dust Mite Controller is a non toxic device that helps reduce dust mites and other allergens. This instrument does not make use of any harmful chemical substances and is completely ecological. The Dust Mite Controller is an electrical device measures about the size of a computer mouse. It works by emitting pulsing ultrasonic waves (frequency of 40,000Hz) to interfere the growing cycle and inhibits dust mites reproduction. Environment friendly and non-toxic, this product is further enhanced with advanced technology that emits ultrasound to reduce bedbugs, spiders and moths.