Block Blitz Block Paving Eco Cleaner. Removes and Prevents Algae, Moss, and Black Spot. Deters Weed Growth for up to 6 Months. 2x Pouches. Treats 30 sq/m.

This is a very good product, but it’s not instant. My husband lost patience and power hosed the drive 🤪But it does say on the packet use every six months and it will keep it clean and that’s what I’m going to do 😃 It was easy to use just apply and leave. Good price

This works to refresh and clean patio. My slabs are old so only dies so much, but can tell a difference. You need a dedicated watering can as don't want to water plants after using this in can.

I used this on some block Paving . Absolutely useless, made no difference at all. Plain water would have done a better Job. DO NOT BUY

I've used this for a few years now. Just two applications (with a watering can) about four weeks apart in late Spring seems to keep the driveway clear for around a year. A lot easier than weeding, and seems to inhibit algae growth that would discolour the blocks.

I used two applications, approx 12 weeks apart. Extremely effective.

Very low performance product

Cleans block paving and stops weed growth used it last year and will use this year

This product didn’t clean my block paving at all. Waste of money , would not recommend