100% SATISFACTION GUARANTEE: We're so confident that you'll love our mold remover gel that we'll refund every penny if you don't like it! if you have any problem about it, refund or replace a new one quickly, contact us at any time for help. WIDE RANGE OF USE: Mildew remover gel can be used on Kitchen Sink, Ceramic Tile Joint, Bathroom, Wall Surface, Glass Window, Corner, Toilet Joint, and other black places. White clothes with Yellowing, oil spots and stains can play a valuable role in the local wash. SIMPLE TO USE: Apply the gel evenly in need of mildew removal, after holding for 3-10 hours, with no scrubbing, and rinse with water or wipe with a towel. SAFE & ECO-FRIENDLY: Bleach Free, Non-Acidic, Low Odor, Eco-Friendly, Safe and Effective. This black mould remover makes an effective solution for tackling any household mold problem. FAST ACTING: Powerful concentrated gel formula clings to tiles, silicone sealant (around windows, sinks, and baths), shower heads, pools, and more.