Sodium Hypochlorite 14-15% 5L, Patio Cleaner | High Strength, Swimming Pool Chlorine

I thought would smell more than bleach, but the smell does linger on. Good stuff, used to clean wetroom tiles and black spot on the patio. Do wear gloves and open windows whilst using. Happy to buy again, I think this works out just as cheap as a well known domestic bleach (in blue bottles), considering it should be 7 to 15 times stronger

I had rather a lot of white spots on my patio, so I tried this. Yes, it cleaned the tiles to nigh-on perfection, but the white spots remained, however; what I did notice that after a couple of sprays (3 max) and then leaving each spray for 30-60 mins, it becomes considerably easy to brush the white spots away.To make sure it was the sodium hypochlorite that was helping I tried brushing away an untreated spot and that was nigh on impossible, so yes; if you have troublesome white/lime green spots you may find this an advantage.Update 08/05/24 (or 05/08/24 for our American cousins). Whilst my back garden had white spots (once upon a time) I noticed even more troublesome black spots in the front garden. They do eventually disappear too, but it'll take 3, maybe 4 attempts to finally clear them... completely... and that's without scrubbing at all (50/50 strength).

Doesn't clean everything, just light clean not working for black spots.

Works well

Excellent product, used 3-1 and it cleaned my brickwork to look like new, will be buying more

Cleaned the green algae off the slabs from the winter and two dogs peeing on it. Use sparingly as you can have too strong a solution as it's strong stuff. Wear gloves, wellingtons etc. Good bit of gear.

Saw a neighbour using this product so bought it myself. Delivery expedient, used product to clean o/s walls. Very effective.

I bought a house with decking in the back yard which looked awful. It was covered in layers of black mold and I couldnt see the wood any more under the mold.I watched many YouTube videos and read reviews to find out which profuct to use.I tried all sorts of things, until I came across someone advising this product for deck cleaning.The result was mind-blowing.I dialuted it in ratio 1:2 as I really needed a fast result. Considering it was my 4th attempt to clean the decking and it was making me tired.After spraying it on the black moldy decking I started seeing results within 2-3 minutes. The bleach was foaming especially in the areas of thick black mold. I used a scrubbing brush and went around 5/6 times brushing off the mold. The result was fantastic. I cleaned off nearly 90 percent of all the black mold.I am very pleased.My only advice is: this substance is so strong that it will burn your skin. So wear protecting glasses, clothes that you dont mind throwing away as it will stain them and gloves and wellies.