Goof Off Concrete Cleaner and Oil Stain Remover - 32 oz. Bottle

I decided to try this product on the worst concrete stain I have. I have tried other products with no success. And, I might add, I was a bit skeptical that Goof Off would work since the application was so easy. On difficult stains you just shake the bottle, and pour it on the spot. You let it dry, then just sweep away the dried up solution which turns into a powder. I did not wear a mask while using this product , but would recommend doing so when you sweep up the dry powder residue. It's very thin and you could easily inhale it while cleaning up the area. There is no strong fume smell with this, but with any chemical product one has to use it with caution. So, I found my most difficult area, poured the Goof Off on the spot, and just did other chores. Later, at the end of the day I checked the area to find the dry powder residue. I swept it up and low and behold .. Goof Off does work! This is the cleanest I have ever got this area. Nothing worked before. I only used one application so I do plan on trying it again and on a larger area. I also have a spot on the driveway I want to try. I would definitely buy this product. The photo is of my garage floor where various liquids have been ground into the cement. What looks like a white cloud is where the Goof Off was poured then the dry powder swept away.