Every heating pad I've seen for at least the last 20 years is in a waterproof container with a cloth cover > > > Be sure you put a waterproof, non-flamable, cover between the pad and your > seed container. Propogation mats are water resistant for a reason. > > > >Go to the drug store and buy a heating pad. They're much less > >expensive than those seed propogation mats. Dave Anderson Tough Love Chile Co. http://www.tough-love.com