Sodium Hypochlorite 14-15% 4x5L, Patio Cleaner | High Strength, Swimming Pool Chlorine, Pale yellow (SH1415-20)

Great product. Works well.

Use this product to clean my patio. Does a great job… removes everything with ease.

Works well undiluted on very dirty patio with black spot. Does not get well rooted black spot off but makes a big difference. Second coat makes no difference so I reverted to metal brush in places. Definitely use PPE as very corrosive and smells very strong. Would definitely use again, good value for money and well more effective than weaker rubbish sold as miracle patio cleaner.

Here's what worked for me. I removed the mud from my blick driveway pointing, then used a jet washer to blast the bricks clean. The black spots refused to budge. Much to my surprise - you have to be sceptical right - this cleaner worked like a dream! I simply used a watering can & a 50 / 50 water mix, and sprayed away! The black spots either disappeared or evolved into grey marks, which another jet wash removed easily. Highly recommended, both for its effectiveness and for ease of applying.

Very good product!

Brilliant. This stuff is great at dissolving your most recent kill. There might be a few teeth left at the end, but, works a dream.

Diluted 4l product to 1l water because we had so much black spot. The black spot had never been treated and was getting progressively worse. The patio is jet washed every 2/3 years but that always left the black spot. I used a small hand held sprayer to apply the product, to avoid plants and the lawn and then left it. This product works with no effort at all! No brushing or rinsing, in fairness I knew it was going to rain later. My slabs are Indian sandstone, they’re porous and absorbed the product. I’m utterly amazed and won’t be jet washing or buying anything other than this again.

Bought last year for use on patio and drive, was very pleased with results . Have bought again in readiness for using in spring.