This great Oil & Grease Cleaner contains live, oil-devouring microbes that actually eat old and fresh oil. Do oil spots on your driveway make you nuts? Spray on the spot, let it sit and rinse. It's gone! Keep the microbes moist with water, and they'll convert oil into harmless compounds! It breaks down and cleans oil from most surfaces and materials. Not only does it eat oil, but one of my sons took a can of "flat-tire" latex spray and squirted it all over the driveway. I tried everything to get it off. Oil & Grease Cleaner took it right off! A perfect pre-cleaner for your garage floor before you paint it with our Non-Lifting Floor Paint. Also great for engine compartments, pressure washers and clothing (yes, just spot treat oil stained clothes before you throw them in the wash). Do yourself and the environment a favor while eliminating oil and grease spots. Nice citrus smell too. Due to the organic nature the color will vary. This does not alter the effectiveness of this great product.