Chain saw leaked on garage floor
How do I clean the oil and gas mix that leaked from the chain saw all over the back corner of the (unsealed) concrete garage floor? Don't know how long it's been there, DH had it up on his car ramps behind the bikes, I saw it last night when taking the recycles out. He must have known it was leaking b/c he put paper towel (one!) under the handle, but it dripped down the ramps and all over the floor!