Patio Black Spot Remover 4 Liter

It works fantastically. In some spots even if I do it through four times it doesn't remove it completely but 95% of the spots it does a phenomenal job. I have been telling everybody about it. It's well worth it. Even though I wish it was a little less expensive. Nothing works like your product. Steve Sullivan

Excellent product! Worked perfectly to remove all the black lichen from my slate patio and allowed me to DIY a job that likely would have cost thousands for someone else to do. Instructions and videos were very helpful.

Second time using this product 👍🏻