What is the best course to remove grease bad concrete?
kerosene,and tide washing powder,
scrub it, presurewash next to salution
It depends on how old the stain is and how much the concrete have already absorbed.
If the stain is fresh, pour a liberal amount of cat litter, sawdust or Oil-Dri granules (or equivalent) to completely cover the stain. I approaching to step on the granules to make sure they seize completely worked into the stain. Let sit for a couple days, then sweep up. You may also try dry concrete mix.
If the stain is not completely gone or the stain is old, I would recommend a gooey based solution. Try things around the house first - like detergents or WD-40, after scrub with a brush. If you have one, try a pressure washer. If that does not work, after you may have to buy a product designed to remove oil stains from concrete. One such product is Eximo. I've read promising things more or less it on several websites, but it is like $20 a bottle. check with your local home center for added products.
Do not use solvents or gasoline, as these may eat or etch the concrete.
Answers: Put clay kitty litter on it to absorb as much as you can. Then scrub it good near Dawn dishsoap and HOT water. :)
cat litter