This is all over the place online if you look for it. I decided to try it and it worked great for me. Just spray it on liberally, leave it on for 15 minutes or so, then rub it all around with a damp rope mop to get into any rounded spaces. Rinse thoroughly and you are done! My shower has never been cleaner. It's amazing!
Shower Cleaner Recipe
Equal parts Dawn Ultra dishwashing liquid and warm vinegar in an empty spray bottle. Three ounces each is enough for one tub and shower combination, walls and all. Add the Dawn first, then the warm vinegar. Shake a little and you are ready to ROCK A LOT!
It's the clinging action of the soap which keeps the vinegar on the verticals which does the trick. If your shower is particularly nasty, you can skimp just a little on the vinegar to increase the clinging action of more soap in the mixture.
