In message
, NT
writes
On Aug 19, 8:48*pm, Tim Lamb wrote:
In message
, NT
writes



snippage..

Permethryn is a synthetic product used as an insecticide

None of these products are anything like as effective as the ones that
the EU has removed from our arsenal of AIs

Best protection is to keep out water by design.
Chris

cheers chris. Is there anything one can add to these preparations to
improve their effectivness, eg a copper salt or cu powder?

Boron.

regards

in what form, borax?

I am not a chemist:-)

Look up Probor manufactured by Safeguard Europe Ltd but there are dozens
of formulations available for rot and boring insect protection.

Probably disodium octoborate!

regards

--
Tim Lamb