Let it dry to a powder a process that can take eight hours or longer.
Clean old concrete garage floor.
Because the stains covered a fairly big area of my garage floor i used painters tape to section off a similar sized area to test each cleaner.
If you have a concrete floor you should scrub it using a broom power washer or buffer and a strong cleaning solution.
To begin cleaning you should clear and tidy the floor.
Pour dry dishwasher detergent or a concrete cleaning agent on the stain.
Pretreat any oil grease or rust stains before mopping the floor.
The buffers can be rented and the rental companies often sell the scrub pads too.
Cleaning concrete garage floor with a floor buffer you can employ a floor buffer fitted with a special scrub pad made for cleaning concrete.
After applying the liquid cleaner to the stained area you simply wait a few minutes and scrub them off.
For stubborn stains use muriatic acid in combination with your pressure washer set to at least 1200 psi.
Mix a half cup baking soda in a gallon of warm water and use it as an all purpose cleaner.
Homemade concrete cleaning solution for regular cleaning a solution of baking soda and water will loosen dirt and grease and help keep your garage floor clean.
If your floor is coated in epoxy a gentler cleaning method is needed.
To remove oil spots make sure the concrete is dry and trowel on the pour n restore garage floor cleaner product 1 in.
These powered buffers will scour the floor replacing the manual scrubbing with a brush.
Sprinkle sawdust or cat litter over any oil or grease spots on the concrete.
Pour n restore which combines a citrus degreaser with a non leaching absorbent is one option.
Leave the sawdust in place overnight to absorb the majority of the oil.
Let the detergent sit for 45 minutes then pour boiling water on the area and vigorously scrub the stained section with the broom.