Oil stain on concrete under a car - Nongasimo/Getty Images If you've ever spotted a dark, greasy blotch under the car in your driveway, you know how frustrating it can be. Whether it's a small leak ...

WD-40, a common lubricant found in many homes, is also an effective cleaner. It is handy for removing stickers and sticky residue, stubborn stains, scuff marks, and crayon drawings from walls. WD-40 ...