PM Remover All Natural Remedy for Powdery Mildew - 12OZ PM Remover can fight the worst situations with complete success Use PM Remover anytime you see powdery mildew. It is safe to use on all plants including food crops and can be used right before harvest with food safe to eat one hour after treatment. The ingredients are non toxic and generally recognized as safe by the FDA. PM Remover cannot hurt you or your plants. PM Remover does not leave a residue, dries quickly and leaves a clean leaf surface for up to three weeks even in the presence of active mildew.