You can’t scrub oil and grease stains away. The trick is to draw them up out of the concrete with trisodium phosphate (or a TSP substitute), water and an absorbent material. Patience is the key.

For serious stains, trisodium phosphate (TSP) could be a good solution, though it may not be available everywhere. Read more: Here's How To Clean Your Bathroom With WD-40 The reason that Coke is ...