Monty Miracle Fast Patio Cleaner - 5 Litre | Outdoor & Garden Surface Cleaner for Patio, Decking, Fencing, Stone, Concrete & Many More | Eliminates Black Spots, Algae, Mold, Lichen in Just 10 Minutes

This is great stuff, works really quickly and better than jet washing. Make sure you wear old clothes when applying, managed to spoil a top with splashes.

This stuff is great! I didn't jet wash my Indian sandstone slabs at all last year. So they had 2 years worth of grime on them and barely see any sun during autumn and winter, so get really bad. I jet washed them first and could then see they were covered in terrible black spots. I then put this stuff down and worked in a bit with a broom. I left it on longer than the 6-10 mins stated. You can literally see it working though as the minutes go by.I have a attached a before (but after initial jet washing) and after treatment collage of photos so you can see how bad they were. I did run out of the stuff, otherwise would have given it another application on the feint bits which are still visible. But the slabs still look way better than they have done for years. I've always avoided treating them as I have a pet, so didn't want something that just gets left on. I liked the idea that thos is washed away after treatment.Great stuff. Will be getting some more for next spring.

I wasn’t sure about this having seen a lot of videos I decided to try it. I’d just finished putting it down and it started to rain so when it had dried a few days later I was very pleased with how the patio looked. It didn’t remove all the stubborn black spot but I’ll do it again in localised areas. Very happy with the result. It’s a bit of a bleach smell but it’s not too strong and quickly dissipates.

I highly recommend this product. It does exactly what it says it does. Use a pump action sprayer with recommended mixture and follow the simple instructions. Warning! wear clothes you don't mind getting white spots on. With the best will in the world you will get tiny bleach spots on them.

Just tried the product and found it to work fine, my steps look a lot cleaner after having the builders in plus all the algae has cleaned off, I have a large patio area and the 5 litre bottle didn't cover it so would need to get another bottle so quite expensive, there is a strong smell of bleach and where it has splashed the colour has gone, fortunately I had old clothes on, I think all in all the product would work well in a small area but having to scrub it afterwards with the broom to spread it then rinsing with the hose is a faff I can do without. I will the jet washer out again nearer the summer, it did clean very quickly though and as I used a weed spray it was easy to use.

I’ve got a 5x5 patio yard . Power washed it last week to get it clean and then tried this product to remove what it is supposed up offer. It did nothing.The smell when sprayed is absolutely just like string bleach. That’s it. I bleached my yard. Nothing more. It did not remove a single black spot. The fence, it did nothing for. Apart from being bleach, absolutely waste of my time and my money. I read so much about it, saw videos and etc and thought I’d give it a try. Never again. I’ll stick to power washing and be content with the results. Mediocre product. Don’t waste 30 quid on bleach.

A bit dubious as I ordered it as you're never sure if it will do what it says on the tin...However, it is better than I thought very pleased with the outcome, although some stubborn areas needed a second going over and a bit more vigorous agitation with a stiff bristled broom...We know now what to order in the future.

Used this for my Indian Stone patio and I am very happy with the result. I feel it has cleaned it really well without having to use a pressure washer and using minimal effort! I followed the instructions and liberally spread it onto my Indian Stone and gave it agitation with a brush. I probably left it on for around 30 minutes, which is longer than the recommended time, but when I used the garden hose to rinse it I wasn't disappointed with the result!I have subsequently sealed my patio and several people, including the Amazon delivery guy, have asked me what I have used.I have ordered more for the Stone at the other side of the house and it is due to arrive tomorrow, so I am looking forward to round 2!Picture shows patio being sealed, hence the milky solution. This product is clear and smells of lemon!Wear old clothes, including shoes, as it shows no mercy!Whilst not cheap to buy, I think you get result you pay for and I am happy with mine. Happy to recommend thanks