Effectively clean up moss, mould, and mildew without any scrubbing; pre-mixed formula is beach-free and non-acidic. It comes premixed with an easy-to-use trigger sprayer to treat virtually any small outdoor surface. The attached sprayer reaches up to 10 ft. high, providing better and faster coverage at any angle. Coverage depends on the porosity and severity of the staining. Wet and Forget Ready-To-Use is perfect to use to treat small surfaces like umbrellas, planters, statues, and porch steps. Simply spray Wet and Forget Ready-To-Use on and forget it.