We have yet to see a garage that's free of grease stains, whether from cars or lawn mowers. And while covering the mark with kitty litter, letting it stand overnight and sweeping it away the next day will eliminate most fresh spots, older stains require a bit more work—but probably not any special products. Smallin uses liquid dishwashing detergent, a bucket of hot water, a nylon scrub brush and an old towel. First, she wets the grease mark and the area around it. She squirts detergent on the stain, wets the brush with water and scrubs the detergent into a lather. Then, she wets the towel and uses it to wipe up the detergent. You may have to repeat this process, allowing the detergent to sit for 30 minutes for really tough stains. Smallin says you can use stronger cleaning products, such as trisodium phosphate (TSP), but it's best to start with the mildest cleaning solution.
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