Want to get rid of an oil or grease spill on your concrete? Sprinkle cornmeal, sawdust or cat-litter on the spill, allow to sit for several hours, then sweep up.

Here’s some scary news: It takes only one pint of oil to produce a one-acre slick on surface water.

To dispose of used motor oil safely, carefully pour the oil into a suitable container. You can buy specially designed one at an automotive store or just use a clean, preferably clear, container with a closeable lid. (Don’t use containers that previously contained household chemicals such as bleach.) Plastic milk jugs with screw caps work well.