SmartSeal Patio Cleaner Xtreme - 5L - Powerful Black Spot Remover Patio Cleaner & Rapid Mould Lichen and Algae Remover for Cleaning Stone Paving, Concrete, Sandstone, Porcelain, Slate & Granite

WOW!!! This stuff is absolutely amazing. If you need a patio, block paving or wall cleaner then look no further. So effective, extremely easy to use, excellent results in minutes. This product is unbelievable. Our block paving was filthy with years of dirt ground in but the results are stunning, honestly’! And our walls are transformed to new looking. Fantastic 5 star

Used product on concrete slabs that had not been cleaned properly for many years, a 1 to 1 solution was applied and scrubbed in by hand. On leaving for 2 hours I then rinsed off and gave a light scrub. Although results were good there was still a few marks left so I jet washed surface and was super pleased with the results, not a single spot or blemish to be seen, having tried jet washing only on similar slabs around the property these results were far superior.

Quite pleased with the result. I cleaned my concrete paving with a pressure wash first (otherwise you can't see the bad areas) then I wet the area with a fine spray. Applied a mix of 1:1 with a spray bottle and scrubbed it in with a stiff broom. This doesn't get rid of tough black spots, for those I went back with neat cleaner. All rinsed off a couple of hours later. 100 better than before. Good product

Amazing patio cleaner! I used a wire brush to scrub my patio and a pressure washer to rinse it off. Worked amazing and super easy to use. The solution dissolved all the gunk. I highly recommend!

At last. A Patio cleaner that actually works. Every time I look out the back door I admire my restored Patio. Was totally black. Tried to clean it with a wire brush and cheaper cleaners to no avail. Used it undiluted and it removed all the discolouring. Now looks like new.

This stuff is brilliant! Works so easily on dirty, spotted patio slabs. Just spray on using a watering can and brush round to ensure complete coverage. Leave for 30 minutes to an hour and then wash off. Needs hardly any scrubbing and the results are stunning (see photo - before & after). Better than anything else we’ve tried!

The product was easy to mix and spread using just a watering can. We had 86m² to clean so we bought three 5l containers. At *up to* 40m² per 5l that should have been plenty. Unfortunately we used the whole lot and only covered about 60m². Looks like the phrase 'up to' is doing a lot of heavy lifting here! Our experience was 20m² per 5l. The good news is that used diluted 1:1 as recommended it cleaned the block-paving really well, including getting rid of most of the black-spot, which the instructions say you need to use undiluted to tackle, so it over-performed it's promise there. We pre-soaked the lawn where it bordered the block paving as instructed, and six days later there's no sign of any damage to the grass. In my opinion at only half the coverage it promised the value for money of this product is fairly dubious, but it did clean the drive nicely.

Works well. Expensive and I needed more than I thought I would, but it definitely worked well.

Absolutely unbelievable. This works so well and so so quickly. Used on my patio which had lots of black spots and dirt. It came out like new. A little brush after application and it’s brilliant. Very fast delivery working 2 days.