One Chem 5 Litre Ready To Use Spray and Leave with added Long Hose Trigger Spray - Fencing Patio Decking Driveway - Green Algae and Mould Killer

Worked after a couple of day's completely removed green algae. Had issues priming to spray gun, found it best to unscrew the spray pattern adjuster a few turns to get the cleaner in to the gun and get the air out. Then it worked fine.

This worked very quick, removed the lighter algae off my fence, had to do second time for thicker algae, the reason for the 4 stars is the pump spray that comes with it doesn't work. Takes alot of pumping to get a little spray then packs up, had to transfer it to a spray bottle

Easy to use and worked well. I used this rather than pressure washing slatted fence panels as I didn’t want to to ruin the neighbours seating area the other side. I could really see the difference between the fence panels I had treated and the ones I thought looked ok but showed obvious green algae once I had treated the others. I bought another to treat the remaining panels.

The solution is good but I won't buyet anymore cause of the pump, it didn't work and I had to use a plastic bottle those from cleaning house in order to spray it.

Spray is broken.

I was a lot dubious about this product. So some of the great melted away in front of my eyes. Some I thought ok it’s not going to work! Bam 24 hours later it’s all gone! Only negative is I didn’t get enough of it! Easy to used with spray top.

Unfortunately spray didn't work so I put liquid in a paint can and applied it to my garden of fence by brush. After about a week all green had gone. Pleased with this but it didn't work on concrete

Brilliant, I used it once and all the green completely went, I'm so thrilled with it