Had an engine failure on my old Mazda. Since I always parks on the back, I wanted to have really clean again. Have after long so look my hope placed in this oil stain removal. It should be sprayed at trockenden weather. It had a little dusted, then remained lying on the ground. After about two hours I took the garden hose and broom. After a little schruben the stain had dissolved to 95%! Super, especially since I have to say the oil there was really long (about 3 months)! I'm with the can more than satisfied.