- Safe and easy to use
- Simply Spray and Walk Away
- Can be used on wood, concrete, masonry and a variety of other areas
30 Seconds One Step Spray and Walk Away Ready to Use on Lichen, Moss and Algae. Safe and easy to use product. Product is most effective on most washable surfaces. It is important to remember that it does not show immediate results but works slowly and effectively without damaging the surface. Some Lichen, moss, mould and algae may take up to several weeks to remove or show signs of decay.