Green-Shield Disinfectant and algaecide is a biodegradable solution for any greenhouse and nursery growers to keep work areas, benches, pots, buckets and cutting tools clean and disinfected. Green-Shield also provides continual control while the treated surfaces stay wet without the odor and irritation that often comes with bleach. Green-Shield is EPA-registered for broad-spectrum control of pathogens and algae on greenhouse glass, walkways, evaporative coolers and decorative pools and ponds. Use 1 tablespoon per gal. of water for disinfecting work areas and containers. Use 1 teaspoon per quart of water for disinfecting tools.