Proven to kill up to 99% of virus including Corona, bacteria, dust mites, and germs. Works on any surface: phones, electronics, furniture, toys, clothes, shoes, car keys and much more. Turn on wand & hold 1-2 inches over surface. Wave wand back and forth for 20-30 seconds to sterilize surface area. This is NOT for human use, do not point light at eyes or skin. Requires 4 AAA batteries (not included).