MMC Pro 5 LitreThe easiest and most effective way to treat and prevent mould, algae and moss on all hard surfaces No Pressure Washing or Scrubbing Required MMC Pro moss killer is a dynamic combination anti viral anti bacterial disinfectant, fungicide algaecide and detergent It kills mould, algae and moss in typically 2 4 days, and has a slow cleaning action in the following weeks and months When treating Moss, ensure you apply MMC Pro such that it is in contact with