Eco-Friendly Oil Stain Remover for Concrete and Asphalt Driveways (10oz)

This seemed a lot of money for so little product, but follow the instructions to the letter and keeping it "misted " with water and it really did work after a pernicious indoor heating oil leak. Only used about 1/3rd of the container. Smell now gone, so pleased with the purchase.

I tried this "living" product on 4 different concrete suraces of varying ages to remove stains. Not a single stain was affected in any way. I followed the directions carefuly and conferred with my wife who assured me I had finally done something right. But alas...no results. A lot of money for zero value. DONT DO IT

I had a large oil stain that was pretty fresh but had been dropped on for about a month. Shook a small amount of product on the stain and wet it everyday lightly. Month later perfectly clean floor.

I had/have some sort of combination of an oil and wax stain on a limestone mantel (very thick--might have been a wax candle or scent melt, might have been lamp oil) that additionally hadn't been cleaned in 50+ years. I bought 3 products for grease/oil stain removal on stone. limestone is very porous and the stain was thick. The other cleaners + a metal brush + elbow grease did a good job when the stain was on or near the surface. This did an excellent job penetrating below. At first I tried the "dampening every once in awhile" technique but was very disappointed. Then, I left a damp sponge on top of the treated stain. That was the ticket! Makes sense that keeping the bacteria wet would allow it to be continuously active. The result was that the stone in that area was much cleaner and lighter.The shadow was still there but my visit was coming to an end so I put off another treatment for another visit. I experimented with a steam cleaner to see how it worked on that area and the rest of the mantel. The area with the faded stain behaved differently. It took on a whitish hue and dried much faster. I was worried for a quick minute that I hadn't read the label correctly and it had something in it that had etched the surface. Nope, no etching. I suspect that there is still a fine coating of waxy oil in the pores. like I say, another application for another time. I'm going to try doing the whole mantel at once and keeping it wet to see how it works on dirt and grime. The only other cleaner that worked markedly well on grime was ammonia based and had 'amines' in it. It worked better than ammonia alone and not as well with ammonia combined with an enzymatic pet stain remover. It helped a lot on the above surface stain.

Unable to remove engine oil from polished concrete. Maybe it doesn't work on modern oil.