Rejuvenate Soap Scum Remover Refill is specifically designed to power through tough soap scum buildup and grime without harsh scrubbing. Gentle enough for daily use, this non-bleach, non-abrasive formula is safe on glass showers and multiple surfaces, including ceramic tile, chrome, plastic and fiberglass. Simply spray and rinse to easily remove soap scum. To refill, remove the trigger sprayer or Click n Clean bottle adapter from your empty 24 fl oz or 32 fl oz Rejuvenate Soap Scum Remover bottle/cartridge. Refill the bottle/cartridge with this ready-to-use cleaner. Replace trigger sprayer or Click n Clean bottle adapter and twist tightly until secured. Always test on an inconspicuous area first. Spray directly onto wet surface. Allow product to penetrate. Rinse surface thoroughly with water. For tougher soap scum buildup, allow product to sit for 2-3 minutes. Repeat as necessary. NOTE: Does not remove hard water stains, mold or mildew.