like an oyster, build up in your bathroom occurs little by little, day by day. Showers and Stuff from Don Aslett is an amazing product that removes soap scum, mildew stains, hard water scale, rust and water streaks. Formulated with a detergent to cut through grime, and a blend of acids for the mineral deposits. Showers and Stuff cleans layer after layer, until all the scum is gone. Great for use on fiberglass showers, sinks, tubs and more. NOT FOR USE ON ANY TYPE OF NATURAL STONE. directions for use; shower, glass shower doors, Ceramic tile, fiberglass and porcelain; If heavy soiled, apply full strength using the included foaming nozzle. Start foaming at the bottom of the shower and work up to avoid streaking. Scrub each section with a scrubbing pad or brush and then allow each section to soak 3-5 minutes. give the shower one final scrub with the scrubbing sponge or brush. Rinse thoroughly with cold water. for daily cleaning: dilute one part with 10 to 20 parts water, spray with foaming nozzle. Allow Showers and Stuff to set 2-3 minutes and then rinse thoroughly with water. Same directions apply to wash basins, tubs, chrome, stainless steel, brass, copper and enameled surfaces. For ceramic tile or kitchen tile floor: use with 4 parts water or as needed depending upon soil level. Apply liberally to ceramic tile floor or counter top, scrub and allow Showers and Stuff to dwell 2-3 minutes. Make sure to rinse thoroughly with water after use. Caution notes; sometimes unglazed clay or mosaic type tile is confused with ceramic hard acid proof tile. Showers and Stuff may cause damage or discoloration to other then real ceramic tile. do not use on worn old tubs or tiles with need to be reglazed.