I bought my house five years ago and every year I would have to hire a pressure washing company to come twice, once in the Spring and once in the Fall. I applied this product to my driveway, walkway and sidewalk in May and since then I have not had to clean my driveway once! This is a miracle product, it really is. My driveway almost looks new it is so clean, it works too well. Very happy with this product, I just bought more to seal my garage floor!