Perhaps one of the most dreaded household chores is cleaning the hard-to-remove soap scum that builds up on the tile in showers and tubs. Instead of scrubbing with harsh chemicals, take the lazier and greener approach instead. Wait for the tile to completely dry, and then use a plastic putty knife to gently and effectively scrape off the soap scum. Whatever is left behind, spray with white vinegar and wipe clean with a microfiber towel. It'll be sparkling in minutes.