Pro-Kleen Patio Cleaner Simply Spray & Walk Away Concentrate Green Mould and Algae Killer Remover 20 Litres

Brilliant stuff. Ideal for pink and black mould. For some ingrained patches I used it undiluted around the gas pipe and meter boxes. Otherwise diluted according to instructions. Sprayed it all over the render and left it on. Can be used as pre treatment before exterior painting to kill mould. Left it a week or so before painting until I could see it had worked. The paint I used was an elastomeric masonry paint suitable for render with feldspar chips in it. This stuff is not nice to skin so wore mask, goggles, rubber gloves and overalls on a wind free day to prevent any blow back from the sprayer. Showered afterwards. I also covered plants in the garden that I did not want to kill. It is safe to use on plastic so the conservatory had a good coat including the double glazing where the glass butts into the seals. I also apply this to the motorhome and it is highly effective at stopping mildew on the roof and rear aluminium ladder. The neighbours houses are pink. One neighbour just used bleach last year on his house wall and it's back to streaky pink this year. Whereas another neighbour saw me spraying, observed the results of this product and called round wanting to know what I had used. I gave him some to try. I spray mine on with a garden sprayer that you can buy extensions for. This gave my sprayer the reach necessary for those difficult spots. All in all this is a product I will continue to buy. I thought of another use for it and that is to spray along the roof edge where it meets the gutter to kill the moss there. And before I forget I used it on the tarmac driveway. Lastly if you do get some on a plant rinse the plant with water. Brilliant.

exellent product, worked really well on my fences, about 60 feet long, very bad mould, non now, takes a few days to work.

Works great on block paving just spray it on and leave it. The moss just turns brown and disappears. Would take hours to remove manually.

Works a treat, does what it should

This is 2nd time I've bought this product. 1st time I was using one that was double the price and ran out 1/2 way through cleaning patio so I decided I give this one a go,so I applied it to the other half and there's no difference between the two.My slabs look so clean and it's keeping them clean. It's been so easy to use as so much better than all the pressure washing I used to do. I've also sprayed it on my fence a few days before painting and it kills all the green moss . Have also sprayed my plastic hut and outside of greenhouse. Wouldn't be without it

I bought the 3 pack deal based on reviews.I intended to use it on my sandstone patio... north facing so does get thick with algae. fences and block paving.I got mixed results. The patio I had to do several times before there was a discernible difference - still not happy with it It did turn some of the slabs brown but that has now faded. I don't have a pressure washer which I think would really do the trick. Block paving came out patchy.. so will redo that.Fencing did come clean after a while... but do be aware that the spray does splash back onto any close plants and lawn... same with patio edging depending on the run off on the patio. So do take care. Just wondering if it might be better not to use a pressure spray and use a different method to avoid damaging any plants etc. I tried it on a poly-carbonate roof- it has shifted the algae but not the dirt so will still have to wash it off, but there was an improvement. Would I buy it again... probably not..

Was a bit sceptical as to whether it would get rid of algae on the fence, but with just one spray the algae has gone and revealed the true colour of the fence. All we had to do was freshen the fence up with a new coat of paint. Very impressed.

After years of jet washing and removing mortar I came across this mixture which I have to say is pretty good. Definitely better using a sprayer than watering can and a lot easier than jet washing... still early days but I can see that the walls, pathway and drive are getting cleaner... I will update in a few weeks..