How it works

Screw it on the hose, turn it on, spray. It meters itself as the water goes through.

One bottle does up to 300 square metres.

What to wear

There is concentrate in the bottle, so the same as above.

Eyes

Eye protection, mixing and spraying. This is the one that matters.

Hands

Gloves while you are mixing.

Spraying up

A respirator if you are spraying above yourself - a roof, soffits, anything overhead. On the ground on a still day you do not need one.

The safety data sheet sets out the full protective equipment. Worth a read if you are handling a lot of it, or doing it every day rather than once a quarter.

Putting it on

Dry surface, brush off anything loose, spray it on evenly and leave it.

No scrubbing, no rinsing, no water blaster.

How long it takes

Green mould and moss die off in days to a couple of weeks.

Lichen takes months - up to six for a bad case. No need to do it again before then.