BioSafe ZeroTol HCZeroTol HC works on contact to prevent diseases such as Powdery Mildew, Botrytis, and Pythium from developing and spreading in your grow. With no toxic residues and a 0 day preharvest interval, ZeroTol HC gives users peace of mind when using it around people, pets, and wildlife. ZeroTol HCs specialized chemical composition partners well with conventional and biological pest management practices already in use. As a no residue disinfectant, it can be