Liverwort - Lunularia

[ferlew]

Can anyone advise on a product to get rid of this on my long paved drive please.
It's really bad at the moment, and I just don't have to 'puff' to keep on at it with a long handled wire brush thingyIf possible, something I could dissolve and use my Hozelock pump sprayer with.
Thank you.

[theprof]

Sodium Percarbonate will do the job. It's available on Ebay reasonably cheaply. It's an oxygen bleach that breaks down into sodium carbonate (washing soda) and hydrogen peroxide. It'll readily dissolve in water and all you need to do afterwards is to rinse the sprayer well and pump a litre or two of clean water through the pipe and lance.
Keep the stuff well sealed as it absorbs water from the air so it's best to buy a plastic tub of it. Follow the instructions on the tub regarding safety. Try 80g of the powder in one litre of water as a start.

[ferlew]

Thank you, I'll look for it.

[theprof]

I'd also add a few drops of washing-up liquid to the mix as a "wetting-agent" ie it will help the mix stick to the thallus (the "leaves") and help to stop it running off. It'll make the pump sprayer a bit harder to clean as there may be a few suds in the pipework!

[ferlew]

Happy to have a suds problem, rather than a liverwort one, thanks.