Short of digging out the contaminated rock and replacing it with new gravel, is there anything I can do to clean up the oil spill in the gravel? It has already soaked into the ground so I'm not expecting to remove every trace, but it would be nice to clean up the "appearance" of the spill.
Would something like a standard degreaser (engine cleaner or cleaner for concrete oil spills) work on gravel? I realize this would just cause the oil to drain further into the soil, but it's already contaminated and I'm not planning to dig it all out.
Anthony Watson www.mountainsoftware.com www.watsondiy.com