Ultima-Plus XP Patio Cleaner - For All Outdoor Hard Surfaces Including Patio, Fencing & Decking - Most Powerful On The Market - 100% More Active Ingredient Than Other Brands 2 x 5 Litres

Works great to remove green algae, good value as it is long lasting. Easy to mix.

I've used this product for several years now and find it works quite well. I've use it on the patio-indian sandstone, fencing, garden sheds, block paving.. etc. I also use it on my car port roof which is polycarbonate. If you need to use it near plants or lawn edges etc, then it's best to cover them as it can kill it off.

Tackles slippy areas.

Does what it states,wollworth the price.

Best one I have used

Does help algaeI got lots off with jet wash so not sure if really worth itNeeded two applications in placesObserving over summer if helps to keep algae off

Product is fine, but delivery person leave the product without ring the door bell with damage and wet box.both cans are loose caps and leaks all over .

So glad I found this product, in has cleaned all my patio to like new, I used this in the spring and again when the garden was put to bed for winter, all through this winter it has worked cleaning the patio. Usually by now our patio in green and very dirty and ready for a power wash but not this year it is lovely clean and bright. It has even removed the black mould spots that even power washing didn’t remove.You have to be patient, this works over a period of time, it seems as though it works every time it rains.Would highly recommend this product, it saves so much work and mess.