Wet & Forget Mould, Mould Remover, Bleach Free, 2 Litre The Wet & Forget Mould, Lichen & Algae Remover offers a comprehensive outdoor cleaning solution, effectively eliminating mould, mildew, and algae from various surfaces. The Wet & Forget Mould, Lichen & Algae Remover is a convenient and efficient solution for outdoor cleaning needs. • Effective mould removal: Formulated to effectively remove mould, mildew, and algae from outdoor surfaces, ensuring a clean and pristine appearance. • Highly concentrated: One 2-litre bottle can be mixed with water to make 12 litres of solution, providing ample coverage for multiple cleaning sessions.