A. This is supposed to be a good way, though I've never tried it. A bunch of
people have written me and said it works great:
1. go to your local hardware store and buy a small container of Portland
cement. should cost about $3.00
2. buy a box of Tide powder.
3. buy a good stiff scrub-brush
Lightly wet down the area to be cleaned. sprinkle equal amounts of tide and
Portland cement over the stain. Use the brush and scrub the mixture until it
becomes a thick paste( you may add a little extra water if needed). Let it
sit for 5 minutes, covering the stain.
Once it has sat for 5 minutes. add some more water and scrub for a few more
minutes then hose it off competely. Repeat if necessary.
Make sure to rinse the areas well and don't let the mixture dry out while
you're letting it sit. It will become almost impossible to remove if it
dries. The portland cement should pull the oil out of the concrete, and the
tide should clean the surface.