On Jun 16, 2:28*pm, "Dave Liquorice"
wrote:
On 16 Jun 2011 08:28:50 GMT, Steve Firth wrote:

Chromated copper arsenate, it works,

Not for timber buried is soil or subject to damp over extended periods.

Is that 'cause of the risk of the arsenic leaching out or doesn't it
work in the wet?

--
Cheers
Dave.

It works good. Posts outlive the wire mesh.

It's really nasty stuff, now banned. It is waterbased and is applied
with an autoclave. (Suck the air out, spray & let the air back in.)
It gets into the soil when someone burns the old posts/fencing.
The effect is very long lasting, crops can take it up too