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. Old, ...

Q: I found your Dec. 3 advice about removing rust stains from concrete pavers to be quite interesting. I have a problem with stains on concrete, though not from rust. We recently put down a concrete ...