"muriatic acid will clean almost any stain from concrete" Scarecrow, I'm not sure whether you would consider muriatic acid to be natural, but I have found that it removes any stain from my driveway. This product is available at OS...
http://askville.amazon.com/muriatic-acid-clean-stain-co...
Many homeowners wonder if it is possible to repair concrete garage floor problems. The answer in most cases is yes, and the repairs are usually well within the range of skills that the average homeowner possesses. From cracks to small chips...
http://ideas.reliableremodeler.com/Article.aspx?Title=R...
"If the stain is new, it won't be hard to remove" Newer oil spots are much easier to remove than those that have set in for a while. You will need a plastic scrub brush and liquid dish detergent. Do not use a brillo pad or steel w...
http://askville.amazon.com/cleaner-remove-oil-stains-co...
Quikrete is, by far, the most popular of all garage floor coatings. Maybe this is due to the catchy name, or maybe they’ve just built a good reputation based on good products, but no one else even comes close. I suppose it just makes sense,...
http://nullbyte.info/family/are-you-considering-stainin...
The EpoxyGuard floor kit is the best protection and preventative maintenance program for your old or new concrete floor surface in your garage, workshop, or basement. Its superior work time allows it to be applied easily, just like a floor ...
https://www.epoxyguardfloorpaintfloorcoating.com/FAQ.as...
No. If CLR is mixed with oil, it will darken the concrete, which is very difficult to remove. To remove oil from concrete or blacktop, try our product CLR® Grease Magnet.
http://tarn-xbrands.com/faqselect.htm
Yes, simply apply on dry area, leave for approx 5 mins and rinse with clean water. For tough stain scrub with brush and repeat if necessary.
http://www.atinsco.com/power1faq.htm#7