According to the Journal of the American Dental Association, "Studies have shown that contaminated toothbrushes not only harbor, but also transmit both viruses and bacteria that cause systemic, localized and oral inflammatory diseases." Named one of the "coolest inventions of 2004" by Time, this compact device uses proven germicidal UV technology, the same kind trusted to sanitize instruments in hospitals and dental offices, to eliminate 99.8% the millions of household germs that can accumulate on your toothbrush, including streptococcus, E. coli, and salmonella. The sanitizer destroys bacteria, mold, spores, and viruses on up to four toothbrushes in just ten minutes, and unlike bulky devices that take up valuable countertop space, this unit is a mere 3 1/2" diameter (occupying less area than most soap dishes). The sanitizer activates at the touch of a button, and shuts off automatically at the end of the cycle. A removable drip cup is easy to clean, and separate slots prevent toothbrushes from cross-contamination. Two removable inserts are included to accommodate shorter electric toothbrush heads or children's toothbrushes. UV bulb is rated for 2000 hours of use. Plugs into AC; UL listed. 6" H x 3 1/2" Diam. (12 oz.)