Black Spot Remover Plus - Max Power - Removes Lichen, Algae & Bird Droppings (10 Litre)

Having tried other black spot cleaning products, this one seems to work the best, although more expensive per litre. I still seem to have a few spots left even after a second treatment (including scrubbing with a hard broom) and second powerwashing, which is a pity. In total, I had to use 20 litres (so costing over £100) on a well stained patio (and move 60 pots, some VERY heavy). The main point for me is my wife seems happy with the result! I can only tell in a year or two's time when I see if the black spots come back.

Having tried the usual brands of blackspot remover, I thought I'd give Floorseal a go. Thank goodness I did! I have Indian Sandstone (12 years old) and prefabricated 'yellow' paving slabs laid by the builder of this house 17 years ago.In my humble opinion, having used Floorseal over a large area I have a few tips.1. Post application, keep slightly wet and after 30 min, go over the area with a scrubbing brush. This seems to re-activate the product.2. Leaving for 4 hours and keeping wet did nothing for me, but agitating and re-applying after 30-45 min brought the best results.3. For really bad blackspot, reapply when dry to those areas.I have found on Indian Sandstone, some areas needed 5 applications, but we are talking only around 10% of the overall patio.On the man made slabs, treat a small area, then move on. I always high pressure off the remnants and push that diluted solution onto the slabs I intend to cover next. Even though the Floorseal is diluted, it begins to work on the next slabs, see image.I have not treated any of my slabs before, so 12 and 17 years of nastiness. Within a few short hours, they look like new! The image above is of the yellow man made slabs and do not convey just how yellow they are now. Slabs behind are untreated, but pressure washed the solution I had already used, onto them. Prior to this, the slabs were grey and covered in algae and blackspot.Make sure you thoroughly pressure wash off and into a drain. I have a lot of hedgehogs, so I am very conscience of protecting them In fact, the hogs were so pleased with my efforts, they poo'd on the newly cleaned slabs!

Really cleans as it says on the label.

It’s fairly easy to apply, I used a watering can. Usual precautions needed with skin, eyes, clothes etc. Takes a bit of time and effort to do it as instructed, especially where the black spots were worse. Only problem for me is cost, as I have a lot of block paving to clean so I’ll need a few more containers. But it definitely works!

I rarely write reviews but this product needs some recognition!! Worked wonders on my concrete paving slabs. Be careful will bleach clothes.

Brought my slabs up really well without a lot of effort.

Really works great product

This surface cleaner was easy to use as the instructions were very clear. My patio looks clean and the product works.