Physan 20 is an algaecide, fungicide, bactericide and virucide, which effectively controls a wide variety of pathogens on hard surfaces and plants. Its applications include greenhouses; hard surfaces; lawn and turf grass; seedlings and cut flowers; decorative fountains, pools and birdbaths; and plants. Helps control disease-spreading organisms which can be carried from plant to plant by using contaminated pots, flats, seed beds, soil, tools and human hands.