The Germ Guardian UV-C Light Wand is effective, safe and natural. Pass this light wand over surfaces to help keep your home healthy and clean. Kills 99% of bacteria, virus, mold & dust mites on bedding, kitchen and bathroom surfaces. Produces NO ozone and shuts off automatically. UV-C Light is used in hospitals to sanitize surfaces and kill germs without the use of chemicals. Light automatically turns off after specified time to conserve battery life.