On Wed, 18 Mar 2009 09:20:05 -0700 (PDT), coloradotrout
I use a perimeter spray around the house twice a year, keep the
foundation clear and dry, quick inspection every month, wood piles far
fromthe house, etc. I think hiring a pro is overkill, but that works
As a former PCO I recommend and use Talstar on my own homes, strictly
according to the label directions.
That isn't a bad price, either.
A maximum concentration will contain 0.20% of active ingredient
(bifenthrin, a pyrethroid). A higher concentration is not "better",
it's just a waste of material.
UV light is murder on all insecticides with which I am familiar,
rendering them largely ineffective after only about 24-48 hours of
exposure, so you'll want to hide it as much as practical.
Termites may infest a structure during the spring swarm via
windowsills, so you might want to treat those.
An application of a 0.10% concentration every 60-90 days or so should
offer adequate protection in Kansas, I think.
How about Termidor? It has Fipronil. Government monitoring of tests 9
years old shows it still provides 100% protection.
How about treating wood with borates? Time and UV don't affect them.
I only became "certified" to apply Termidor because I had clients
asking about it. I never failed to switch a client to baiting, so I
never actually used it.
I doubt an application of much of anything is going to remain in place
in uncontrolled environments for 9 years, and, rather than applying
something with that degree of persistence, I'd prefer regular
treatments of less persistent materials.
It also offers the homeowner more of a sense of security, I think.
Outside my area of expertise, so I couldn't say.
Here's Griffin Exterminating's page on Termidor:
I guess it reflects the opinion of these professionals who have their
choice of products. They say U. S. Forest Service tests have shown it
100% effective after 8 years. They say it doesn't leech because it
binds to soil. They're conservative like you. They say you can count
on 5 years. (The instructions I got said to apply it in a trench. That
would keep it out of the sun.)
Griffin says pyrethroids repel termites, and that reduces the kill.
Termites don't avoid Termidor.
They're similar to borax, but the stuff for termites penetrates wood
better. I read about them in reports of government tests against
Formosan termites in Louisiana. Borates were the most effective wood
treatment. They quickly eliminated a large colony for me.
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