Lilly Miller® 100503872 Hose 'N Go Moss Out For Roofs & Walks, 27 OzLilly Miller Moss Out For Roofs And Walks Spray kills moss quickly, working in hours. With its hose end sprayer this product will cover up to 500 square feet. The non staining formula can be used on roofs, walks, decks, and patios. It will not stain concrete, pavement, stucco, or wood. Size: 27 ounce Covers 500 sqft Mix product with hose water Hose water only or off Sprays up to 25' Attaches right to your garden hose no mixing Kills moss quickly see