If you're doing any cleaning today, be sure to try my recipe for the best shower soap scum buster EVER! Take a spray bottle and fill it halfway with white vinegar. Heat in the microwave. Fill the rest of the way with Dawn dish soap. Put lid on and shake to mix well. Spray on your tub and shower walls. Allow to sit for a few minutes and rinse away. It will totally melt all the gunk, slime, sludge and other stuff that builds up including a bathtub ring!