Do those garage-floor grease stains bother you every time you go in or out? Here’s how to make them disappear. First, if there’s still any slipperiness (or even a glob of grease) to the stain, sop it up with sawdust (available at home-improvement stores). Then pour cola on the stain, and let it stay on overnight. The next day, mix one-third cup of liquid dish detergent with three cups of plain, warmish water, and splash the stained area with the soapy water. Then hose it down with plain water. The grimy grease stain should be gone. If not, repeat the cola process.

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