SmartSeal Green Clear - 25L - Spray and Leave Patio Cleaner & Conservatory Roof Cleaner - Green Mould and Algae Remover for Paths, Fences, Roof Tiles, Decking, Brick & Concrete - Covers 625m²

Excellent product very good cleaning results on a old concrete patio

used at the high strength ratio of 3:1 and in 3 days you can see the Moss dying and going into an amber colour, its not green anymore and its slowly going away.

Used 1 to 3 ratio and quickly the green went beige. Next day patio looked clean. Best one I've used in years

I applied the spray about 2 weeks ago. I was expecting to see everything that I sprayed to have turned brown by now, but the effects have been patchy: the majority has turned brown, but a significant minority of the area sprayed is still bright green. It is possible that the reason was that we had a short sharp shower about 8 hours after application. I am waiting for another opportunity to spray another area, and maybe I'll raise my overall rating if that one goes well.

Good price and fast delivery. Have used this moss killer before, and it works well.

Brilliant stuff after two days it killed the algae on my fence ready for painting.

Has a great reputation but I now need time to see how well it works as I have only just Received it and only just used it!

within 24 hours my algie covered pavers were clear, then we had a down pour which washed them off and they now look like new