ZeroTol HC is a broad-spectrum algaecide, bactericide and fungicide peroxyacetic formulated for the homeowner and hobby grower. It is a no residue sustainable chemistry that is proven to keep diseases such as Powdery Mildew, Botrytis and Pythium at bay. With no toxic residues and a 0-day preharvest interval, ZeroTol HC gives homeowners peace of mind as it is safe for people, pets and wildlife.