Stoneworld Rob Parkers Best Patio Cleaner 1Litre

It is quite expensive and followed the instructions. It cleaned some but not all the areas of the stone.overall quite disappointing

....the ONLY product that's kept its promise for me. Our sandstone patio (pride; joy and over indulgence!) looked sensational when laid 15 years ago. I religiously pressure wash it every year and for the last few I've been applying patio cleaners but the black spot has got worse and worse every year to the point where many of the tiles had become more black than sandstone. On a trip to Stoneworld I asked Rob Parker about my problem - he's clearly a man who passionately loves his "stone", and has had a special cleaner created for him (industrial strength) that gets the job done properly. My patio now looks as good as new, truly amazing and very very pleasing.

I purchased two bottles. Followed directions to the letter on first bottle and removed nothing. Put the 2nd bottle on after reading further reviews on here and left overnight. Minor improvement e.g. removed lighter stains but not black spotting. Emailed the company to complain that product did not live up to the claims and gave details of usage. received a reply with no apology and asking me to call them and give details which I already put in email. Subsequently bought a different product from an another buy and sell web site and it was £40 for 20liters and removed all the black spotting virtually instantly - so I would avoid this product as it is a poor product regrading its claims, its small volume of chemical for price much better products on the market and poor customer service.

I bought this to see if it might work on the black lichen marks on my patio. It did not; it seems just to be a general cleaner and to make little difference. It is expensive and therefore doubly disappointing. Its general smell resembles that of thin bleach with some white flakes of soap powder or similar. At its price it ought to be the best patio cleaner, but it seems to do no more than wet the slabs.

Great product really worked patio looks like new

Product does not work and does not remove black marks

I bought this without any real expectations. It completely transformed my raj green patio which was covered in black spots. I applied this neat and used a decking brush to apply (which seemed to help the product). I then covered in thin plastic sheets. All of the patio where I was able to apply a reasonable amount of product cleaned up perfectly. Small area where I ran out didn’t clean up perfectly but was around 75% improvement.

Totally rubbish!! First picture is a before picture, the second picture we tested on a strip and left for an hour, all it did was clean the part of the tile with no lichen, the other pictures are strips where we really brushed it in and covered with plastic so not to dry out and left it on for 24hrs as you can see it has done absolutely nothing!! Don't waste your money on this product! My husband just got an abrubt reply to his email, glad we only bought one bottle.