"Patio: I sprayed on bleach to remove stains from leaves, acorns, and twigs then powered washed with plain water. After two days of drying time, I applied the Concrete and Driveway Sealer. I chose this product because it containes siloxane which I have read should seal by penetrating the concrete rather than just sealing on the surface. I brushed it on around the perimeter for an outline and rolled within the outline with a 3/4" nap roller. I applied a second coat because the concrete "drank" up the first coat quickly even though I applied it liberally. I'm interested to see how it sheds rain. My hope is less staining and longer life for my paito. Time will tell."