Very effective product.

It works! Need to order more! Big drive!

Staff clarified product capabilities and treatment process, and arranged a prompt delivery

Cleaned the patio didn’t remove the blackspots

Works really well. Goes virtually nowhere. But if you can afford it, go for it. Just remember, it is not diluted with water, so 5L is the minimum to buy, in my opinion. It works, where others do not, and does not pollute or harm soil.

Just perfect.

I have been using the preventer on my patio now for the past 4 years and I can honestly say it works brilliantly. Even had someone think we had a new patio. Expensive but I think worth it.

the only thing that works

I've used this before on our sandstone patio and it really does work. Expensive, but it does do what it says.

Great product, delivered as advertised. From my experience however don’t use the product unless the temperature is in double digits. Also my patio has required 4/5 treatments in places as it is well over 10 years old.. so becomes costly but cheaper than a new patio!!

Awesome product, does exactly what it promises to do. Quick delivery and good customer service too. I had to return a bottle as I over ordered but the refund was processed very quickly with minimal hassle. Thanks!

This product does exactly what it's supposed to do

I ordered the Black Spot Preventer as I have done for a number of years now. It is a great product, does what it promises, and the delivery service from the Company is first class. Please keep if coming!

Third purchase of Black Spot Remover. Has done excellent job on patio and drives - good as new. Those we have recommended it to are equally enthusiastic.

Great cleaner

Easy to follow instructions and it worked a treat. Easy to apply. Had to apply second coat to only one area which was particularly bad and then a perfect result was achieved. I highly recommend.

Waste of money

Very efficient. Removed all black spots on Portland stones, Very clean result

Awesome product. I use it every year.

Product received on time. This is a repeat purchase - not used these products yet but previously they worked well