Poured onto asphalt gasoline stain. Didn't think there was much hope ! Dark brown stain, really contrast to the blackish gray asphalt. Stood out like a sore thumb !!!!! Followed directions on the bottle , gave it 24hrs ! Swept it up . To my amazement, the stain now blended very well with the surrounding asphalt ! Awesome product ! Performs just as stated !!!!

It actually worked! I had fresh oil stains on my pavers and tried to clean them with various degreasers and dawn soap, which did not work. This product cleaned up the stains nicely! The product is easy to apply and easy to scrub off.
The only negative is that the cleanup (as directed) leaves a big mess of white debris. What I did was scrub off the dried white cleaner (easy), and I used a shop vac to suck up the white debris before final cleaning with the hose.

The oil from a chain saw leaked on the floor of my garage and I let it there for a couple of weeks. Applied this product and let it sit for two days. I'd say it works on new spills/stains OK as it pulls most of it out of the concrete. I applied it to a much older smaller spill that had been there for years and it remove some but left a lot. So recent spills, B+. Older spills D.

So, I gave it 4 stars purely because, while it does clean the spot well, it does leave a bit of residue.

As you can see in my pictures, I have a fairly deep ATF stain on my driveway from my truck deciding the front seal on the transmission didn't want to be a seal anymore.

It was about half a quart dumped onto my driveway and has been sitting for 3 weeks.

The first few pics show a similar amount of the material, but one dollop spread out. As you can see, the effect from either is basically identical, so you can spread it and save yourself from using way too much!

As for the next series of pictures, I did a second coat to see if it would pull more of the stain, and it seemingly did! But with obviously diminished returns.

The difference is stark at least! And it seems to have removing a large portion of the ATF stain at the least.

The first application was for ~30 hours, the second was for 12 overnight.

Each instance when clearing it, I used a special brush with a hose attachment to dissolve the powder into solution first, and then brush it off as liquid so my lungs wouldn't get blasted by the powder. The powder is fairly egregious once brushed dry and will mess with your lungs.

I spilled almost a whole oil filter canister on the garage floor and walk way. I soaked up as much as I could with rags but still had a mess! I ordered the "Overnight Remover" which arrived the next day. Some of the spill was in direct, intense, sun while the rest was on the garage floor sheltered from sunlight. The container had enough to generously cover both locations with a little bit applied to some woodwork which also suffered some splashes.
I am amazed at how well it worked! Would I buy it again? Absolutely Yes!