– the new cleaning system that quickly cleans windows, cars, RVs, boats, patio furniture, siding and more! Simply put the Full Crystal cleaning powder into the specially-designed spray bottle, add water, and attach your garden hose. The powerful, built-in pressure sprayer reaches up to 27-feet away so you can easily clean high windows, siding and more without using a ladder. Simply spray and rinse. Harmless to grass, plants and shrubs.