SmartSeal 'Green Clear' Highly Concentrated - Easy to Apply Best Mould, Lichen & Algae Remover - Quickly Kills Organic Green Growth from Roofs, Driveways & Patios - Algae Killer For Driveways (2x5L)

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

This moss killer is excellent, you can see the moss changing colour a day after application. Within a week the moss has been killed off. It’s easy to use, mix with water and apply with a sprayer. Although it is quite expensive it’s good value for money. Buy two 5 litre containers and you get a discount.

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

Instructions for use are easy to follow. It killed moss and other similar growth on my patio, and initially, I was very happy. However, six to eight week later, the moss and lichens etc are back and colonising the cracks between the slabs enthusiastically. I am disappointed, as if I am to keep the patio clear with this product I will need at least 3 applications a year which will be expensive.Will not be repeating purchase.

Effective and quick-acting. Easy to apply. Too soon to say how long treatment lasts, but all good so far.

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