MY16 Patio Cleaner Simply Spray and Walk Away Green Mould and Algae Killer for Patios, Fencing and Decking 5 Litre Concentrate (Makes 25 litres)

Excellent. Within hours of spraying my decking and paving slabs , the results were noticeable. The following day - no more green. It was recommended by a friend of my partner, and I was hit and miss wether it would work. No damage to my paint work either. It is a bit expensive , but I work it out at 5 litres will do me 5 years.. therefore £3 ish per year - that's a bargin. Just Spray and forget. Buy it ... You wont be disappointed. However, it wont dissolve or remove dirt, so you will still need to pressure wash, or brush/scrub general dust/dirt away. Big thumbs up ! !

Worked well got to work on the green algae within aday

Firstly, I only ever really leave reviews unless I’m either really impressed, or really disappointed. This stuff is awesome! I mixed it in the 1:4 ratio as it says on the bottle and sprayed it on using a Cuprinol pressurised spray bottle so the actual application was really easy and covered about 15 metres worth of 6ft fence panels. Just to be safe I mixed another lot and went over it again but this time did both sides of my bottom fence as well as all the rest again. I didn’t pay attention to how long it says it takes to work but….ive gone out this morning (the next day) and there is not a single spot of green in sight! I can’t believe how quickly and efficiently it has worked and I’ve still got enough left for another 3 applications so probably another 3 years worth! Very happy with it. What I would say is where the algae was a little bit worse there is a slight grey residue left behind but we’re due thunder this afternoon so I see if a downpour washed it away. Can’t recommend highly enough….lazy gardening is my kind of gardening!

Brilliant. Green removed from patio slabs within hours. Will be interesting to see how long they stay clear of green for.

Not sure what to make so I have attached pics. First of all it says not to put on wet wood etc so I waited for the fence to completely dry as we sprayed the fence a few days prior to treatment to get rid of cobwebs etc. I wouldn’t say it’s amazing but it did work and I went over this 3 times waiting for each time to dry. I used a small Handheld jet wash that is quite powerful, I’ve read someone painted it on with a paintbrush and they left some photos so I think that in my opinion would be better but as you can see it has removed a lot of algae so I would say it’s effective maybe it would work even better with a stronger jetwash.

very good product ,does what it says .

I purchased this to clean slabs and concrete around the garden, A few days before applying the Pro-Kleen a full jet wash of the paving was undertaken to remove any dirt and surface algae. A few days later on an entirely dry day the product was applied with a garden sprayer as per manufacturers instructions. A small area was not treated as there was not enough chemical to complete the entire garden. It has now been a couple of weeks since applying and the only difference is some of the green algae and moss has slightly reduced but no change at all to the black spots of mould compared with the untreated area.. UPDATE: After several months I have noticed a lot of the black mould has significantly reduced. It seems this product does work on the mould but it takes time. I have now revised my score from 1 to 4 stars and would use this again

Brilliant I sprayed my fence and deck last Sunday it was a lovely sunny day. Since then we've had rain, hail and frost. As you can see from the photos the deck is still a bit green but it hasn't really dried out. And the instructions do say to avoid spraying if rain is expected and to use it on a dry surface. My fence is looking really great. I took the second set of photos a week later at about the same time of day and on the Sunday. We had yet again another rain shower earlier so I still haven't been able to spray a second time. I was unsure about how much I would need to use so I measured out a smaller amount of 500ml mixed with 2 l of water so I had 2.5 l instead of the 1l with 4l of water. But used that up on the decking and part of the fence. And ended up mixing up the same again.