Best product on the market and it deep cleans without harsh scrubbing. I put the set on the grass since I'm not sure if it would stain our patio. Our teak set is large one table and 8 chairs and it took me about an hour to clean it. My wife helped. For part 1 make sure you have the hose running & Scott Brite pad works the best. Also I can advice to use a spray bottle. So spray, scrub light and rise of all the debris and work in small area's top to bottom. Part 2 - Do the same, but this product brightens the teak. After the wood is completely dry!!!!! I used their Semco Sealer. You end up spending about $200 cleaner + Gallon Sealer but it's worth it and our teak set looks like new again.