Our wall mold removal gel (90g box) contains emulsifiers, bacteriostatic agents and surfactants. It can remove black mold from any surface, clean black stains that have adhered for a long time, and make the home environment cleaner. Its usage method is very simple: 1. Dry the surface with a piece of cloth. 2. Squeeze the gel evenly onto the surface. 3. Wait for 3 hours and rinse with clean water. It only takes 5 minutes to apply the mold-removing gel. Wait for 3 to 8 hours, and it can clean the black mold in every corner of the house.