Using Cat Litter or Baking Soda Spread a thick layer of clay-based cat litter or baking soda over the wet spot. Look for a heavy-duty degreaser specifically labeled for use on concrete or asphalt.
Harnessing Mechanical Action for Oil Removal
As it sits, the powder draws the oil out of the concrete. The grease bonds with the aggregate in concrete or the surface of asphalt, creating a barrier that repels water.
The high-pressure stream of water acts as a physical force, pushing the oil residue out of the concrete matrix. You may need to repeat this process a few times to remove the entire stain.
Leveraging Mechanical Action for Oil Removal
Concrete is porous, which means it will readily absorb any new oil that comes into contact with it. Allow it to sit for several hours or overnight.
More About How to remove oil spots from driveway
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