The Dust Mite Controller simply plugs into your socket & emits a complicated range of ultrasonic waves covering up to 62.8 cubic metres. These sounds interfere with the feeding a reproductive cycles of the dust mite, immediately reducing the amount of allergens produced (faecal matter) & over a period cause the population of mites to decrease. Product Highlights The Dust Mite Controller can help with: Itchy Eyes Runny Nose Skin Rash Sneezing Snoring Wheezing & coughing