HG Algae & Mould Remover

This multi-use mould remover removes algae build-up & spots from patios, paths, roofs, sleepers, terracotta pots, concrete, brick walls, gravestones & other outdoor stones. Instructions: Dilute as directed, apply to outside surface & build-up will be gone within 36 hours; Goodbye to green slippery patios & hello to clean looking stone showing its natural beauty