Was just cleaning my garage floor the other day and thought I'd share a little trick I came up with for getting rid of oil spills and stains....How I came up with this was a few years back I was renting a house from a property management company. When I went to move out, the driveway had the typical few small stains from oil drips that any normal car over 5 years old would leave. Well, the management company was trying to charge me over $1000 to clean them up (total sham company I came to find out). So I went about the usual: carb clean the spots, brake cleaner, gasoline, Dawn dish soap, Simple Green, Purple Power, industrial strength cleaner, on and on. Finally, as a last ditch while doing a load of laundry, it dawned on me to try the powdered Tide I was using. I gave the driveway a light wet down, then sprinkled some powdered Tide on it. I spread it around with a broom and let it soak for about 15 minutes, then lightly wet it again and scrubbed it with the broom. I did that for a bit while I had a couple of beers.....soak, lightly scrub with the broom, wait, soak, lightly scrub....when I did my final rinse, I was amazed. The concrete looked brand new. Totally bright, clean, and oil free. I've been using this trick to clean my garage floor every time since then. As a bonus it leaves the garage smelling like clean laundry for a week or two. Just thought I'd share.