How to Clean Grease Off of Garage Floor

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It is not uncommon to find grease stains on your garage floor, either from your car leaking oil or you spilled grease when working on your car. The sticky nature of grease can make removal difficult. Cleaning grease stains from your garage floor when you first notice them will give you the best results; however, even old grease stains can successfully be removed.

Things You'll Need

  • Rags
  • Cat litter or sawdust
  • Broom
  • Dust pan
  • Powdered laundry detergent
  • Hot water
  • Scrub brush
  • Garden hose attached to water spigot
  • Trisodium phosphate
  • Blot up any puddled grease from the floor with old rags. Sprinkle a liberal amount of cat litter or sawdust onto the spot. Let it sit on the stain for at least an hour, but preferably overnight, to absorb excess grease.

  • Sweep up the cat litter or sawdust with a broom and dust pan. The absorbent material will soak up much of the grease, but a spot will likely still be left on the garage floor.

  • Sprinkle powdered laundry detergent onto the grease stain. Add enough hot water to the detergent to make a paste. The amount of water and laundry detergent will vary depending on the size of the grease stain; however, you will generally use a ratio of 3 parts detergent to 1 part hot water.

  • Scrub the detergent and water into the concrete with a stiff scrub brush. Let it sit on the spot overnight.

  • Flush the area with hot water and scrub the spot again to lift the stain. Rinse the floor with water from a garden hose.

  • Scrub the stain with a solution of 1 gallon hot water and 1 cup trisodium phosphate if the grease stain persists. Use a stiff scrub brush to briskly scrub the concrete until the grease stain is gone.

Tips & Warnings

  • Oven cleaner can be sprayed on the concrete as a last resort for removing grease from your garage floor. Scrub with a wire brush, then wash with soapy water before rinsing with the hose.
  • Wear rubber gloves and protective eyewear when using trisodium phosphate.
  • Make sure to dispose of old, greasy rags appropriately to avoid a fire hazard.

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