Depends on how much timber you wish to protect or salvage.What quantity ?
If its for
A/ furniture making and where talking about
seasoned timbers that your processing , cutting and dressing.
B/ Or green timber ie slabs cants or boards.
c/ Seasoned beams or structural pieces.Internal or external use.
industrial Timber Preservation by J.G.Wilkinson
HBK. HBK.
9780852271032.
Published After 1979
Kiln drying is an excellent method,if you got a kiln.Otherwise pricey or if you have the time an space to make one.
For seasoned pieces of timber critters I've use Rentokil
BORER insecticide (from the hardware-not cheap)diluted with metholated spirits.Metho ,kerosene, or white spirits are good.Spirits on their own will help suffocate the critters.
Paint it on liberally to let it soak.It has to penetrate.Do it after you have dressed or if not use dust extractors or mask when dressing.POISON !!!
On seasoned dressed timber i generally give one heavy dose of mix then follow with just spirits brush wash to soak.Kero is poison to them and so is
the hydro carbons of white spirit.
A,B and C have differant ways of going about it.I elaborated on A cause you mentioned Poly......
If its in the stack let them have a munch till your ready to use it.Then cut
em out and or zap em with mix.
If its a choice piece you need for a project you can even get a seringe from the pharmacy(large one and inject holes with mix)
Had a mate who lay a seasoned slab, in his home ,for a drinks bar top. Looked great.Mahogany and pollied.
Year later ,he went scitso at his son for drilling a couple of holes in it -till he realized .........
FORUM SEARCH WILL PROBABLY REVEAL MORE-ALL THE BEST
- Graeme