The Everest™ Solution: The NoStench™ Sponge is GUARANTEED not to stink for 90 days! NoStench™ technology prevents bacteria from living on / in the sponge for 90 days without using poisons! No more stench – no more spreading of those nasty germs. The non-toxic protection resides throughout the entire sponge material - it doesn’t wash out and doesn’t fade. This is the perfect kitchen sponge!