Erie, seriously... stop what ever you are doing, and go to the store and buy a couple cans of Kaboom foamtastic with Oxi Clean, in the purple can. Spray it on you shower walls and tub, and wait a few minutes... after a while, hose it off. If there is any soap scum left, it usually wipes off with a towel. If not, apply the Kaboom again, and let it do its magic! It is awesome stuff!