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This stuff is made by the cleaning gods!Excellent packaging and delivery.Very clear instructions on the back of the container. It is very important to follow the clear and sensible safety information.I mixed on a 1:10 ratio of SHC to water. After sweeping and jet washing my drive, I mixed this magical concoction, added a touch of Fairy liquid and using a stiff broom brushed into the blocks. Left for around 10-15 minutes then hosed it off. 20 year old drive came up so nice that three neighbours have asked me to help do theirs. It has the obvious bleach smell but use correct PPE or even dilute it a little more and it’s not any worse than your domestic bathroom bleach smell. Once hosed the smell doesn’t linger. Very effective in killing off weeds and removing black spots. Once dried I brushed in paving sand and sealed with Sika Path and Patio seal. Should last at least 2 years again without any weeds coming through if you seal the drive. Follow and use as directed and it will last a long time.

I bought this to clean my sandstone patio of the unsightly black spots. I had jet washed the patio (after 14 years of neglect) and the result was thoroughly disappointing. I was contemplating the cost of a complete replacement when I discovered this stuff. Decided to give it a go and wow ! What a difference. I’ll post photos so you can see the transformation! Really worth the effort.First jet wash the patio, you need to get rid of the surface dirt. Then put this stuff in a watering can and sprinkle it on to about 4/5 slabs at a time. (Use it neat, do not dilute it.) After sprinkling it on, use a hard bristled brush and brush it well into the tiles. Leave it for 30-45 mins and most of the dark makes and spots will be gone. Re-apply if there are some particularly bad places. Then rinse it off thoroughly.Wear gloves, goggles and a mask with a filter, it’s got a incredibly acrid smell. Wear closed shoes that you don’t mind trashing, it will bleach the clothes and shoes if it splashes (and it 100% will splash).It will probably kill plants, and don’t let your pets near it.Good luck!!

Anything that need cleaning outside will sparkle again with this cleaning material. Great!

The media could not be loaded. I never write reviews! After trying lots of different products I saw this online. It is like something from alchemy. I mixed it 50/50 with water and poured it on with a watering can. Then brush it in and let it do its magic. The stones look new. 100% recommend. ⭐️⭐️⭐️⭐️⭐️💫

I bought this before for my back porch and I was stunned by the results. Thoroughly cleaned my slabs and paving area. It brought them up like new. It was great value for money. I bought 4 more bottles of it for future cleaning. It arrived a day early for which I'm pleased. Highly recommend.

Great product

I purchased this as an interim solution until I could afford to replace my pressure washer. I've used it for the first time today and the results were instant!I used a 1:4 dilution with a squirt of washing up liquid.The patio will need a second treatment and so far there has been little impact to the white lichen spots.I have done my best to avoid plants and lawn but I'm really concerned about the wildlife and how best to safeguard the woodlice and spiders etc. as I'm sure bleach isn't good for them.Patio smells like a swimming pool currently.I don't know if regular household bleach would have the same effect but based on today's results I'll be ordering more of this stuff.

Customer recommended for keeping my water feature clean uses on pools very good keep clean on sloughs easy use will last quality great well packed works well no real smell safe to use read instructions as is strong use as described it’s not a toy