Has anyone used this product? I've read good things about it here and there how it works killing odors, and not covering them. If it truely works, then I'll definitely be picking up a gallon. Had a few customers ask me about removing cigarette odors but always turned them down as I didn't really have a method or chemical for this. I know theres a lot of chemicals that are supposed to remove odors, but from everything I read, most of them just mask odors or hide them temporarily. Valugard has been one of the few I've read about that people claim actually works to completely eliminate odors.