I had my deck stained and noticed they spilled some of the oil-based stain on my concrete patio. A quick google search said to use TSP to soak it up, however, it's already dry. Is this hopeless?
You can get liquid TSP. By the way, here is a pretty good Youtube video of a guy testing various products. Spoiler alert: the TSP and the Drylock Etch worked the best.
Here is a link that might be useful: Youtube - removing oil stain
Thank you! I didn't even know TSP came in liquid. I will give it or the Drylock Etch a try.