Sika Brick & Patio Cleaner 5Lt

This works brilliantly it’s perfectly priced. I use it for my patio and it makes it look like new I also use it for cleaning my toilet which makes it gleaming. All you have to do is empty the water out of the bowl completely and then pour it this cleaner up to the waterline and leave for an hour if you leave it longer it will work better for more stubborn build up of limescale make sure to wear rubber gloves and use a hard bristle brush to coat all areas and leave 20 minutes for that to work in after the 20 minutes just give it a quick scrub with the brush then flush it

Works great for my purpose - which may be different to others.' I need it to clean (dissolve) adhesive from the backs of porcelain tiles so I can reuse them. For that it works well for 2-3 tiles (60x60cm). After that the active ingredient, hydrochloric acid, is neutralised too much by the base of the adhesive to do more. That's not the fault of the product by any means. UK law restricts Sika from increasing the HCl concentration; that is, making the cleaner any stronger without requiring the customer to obtain a special Government licence. You probably wouldn't want it any stronger to clean a patio, anyway, as you'd risk killing lawn and plants nearby.

Great product

Great product did what it said on the tin it removed the cement stains on our block paved driveway

This stuff cuts through patio grime like it owes it money. Moss, algae, general filth – gone after a soak and a scrub. It’s not the kind of product you want to sniff for fun, but it works fast and rinses off cleanly. I used it on a wall too, and it came up brighter than I expected. Just don’t wear your good shoes while using it.