Purple Power Driveway and Concrete Cleaner 1 Gallon Industrial Strength

I had oil and spills from my smoker onto my concrete patio, and I needed something to dissolve it and get rid of the stain. This product worked great. You need to apply it and then scrub the area with some kind of steel or wire brush and then squirt it all off with the hose. I did that, and it all went onto my driveway. So, I will be working on removing all that in the future. You need to be able to wash it into some area other than the concrete that you are removing it from, like dirt or other ground area. Other than that, this product absolutely dissolves the grease and removes it from the concrete.