Does what is says on the tin!!!!!! Usually when someone says "it's too good to be true" you hesitate BUT this product actually DOES what is says on the tin!!! So far, I've only done one patch but the results are amazing!!!!!! It has restored the Onyx chipping to its original soft colour, can't wait for weather to improve so I can finish the whole garden!!! Then I'll use the Patio Black Spot Preventer. I have some lovely before and after photos!¡!

Ditch the power washer The Black Spot Remover product is amazing, I wouldn't have believed it was possible to salvage our 10 year old natural sandstone patio back to "just laid" condition with such minimal effort. Adjacent plants and even our water feature (the latter is cautioned by the supplier) were unaffected by the application. Don't normally recommend products but this is very good. Supplied promptly without any hassle.

Transformational A very impressive product which has transformed our Indian Sandstone terracing which is about 20 years old and was heavily marked with lichen. Deep rooted marks needed 3-4 further spot sprays particularly along the edges of stone.

Does what it says This is a great product and does what it says. However, it's very expensive and I will need quite a few containers to clear a relatively small patio.

not as good as lead to from promotion video Some stones came up really well others even after 4/5 treatments have a lot of spots left. Customer service said that all spots must be removed to prevent spots coming back.