For best results, start with a clean shower. Immediately after showering, thoroughly mist spray cleaner on tile, tub, shower curtain, shower doors and all wet surfaces. No need to rinse, wipe or scrub. If starting with a soiled shower, daily shower cleaner will loosen buildup and clean your shower in 2 to 4 weeks. Do not use on natural marble, brass, acrylic, or varnished wood. To Spray Every Drop: Tilt bottle at a downward angle while spraying.