How to stop bees/wasps/hornets from entering PTZ cams?

You can look at Tempo dust and an insecticide duster.
 
Take a few cotton balls, and soak them in bifenthrin (Talstar) concentrate.
Tuck them behind the camera wherever possible and they'll keep most insects away for a few months.
I bought a concentrate jug of Talstar a couple of years ago when I had a massive invasion of Asian Lady Beetles one fall. The stuff has staying power and it knocks the beetles out. It also knocks the wasps out. A little bit goes a long ways. I found out this spring that Talstar is what my bugman treats my house with.....go figure.
 
I've been using bifen for years. Works really well.
 
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Yup, bifenthrin (a synthetic permethrin) is a powerful and relatively SAFE insecticide.
I mentioned Talstar because you can buy it from Amazon. It has two forms:
  • oil based - typically outdoor use and longer-lasting
  • water based - typically indoor use 60 to 90 days
Least expensive pre-mixed water based item is Ortho Home Defense from Lowes or Home Depot.
I believe it contains about 0.5% bifenthrin in a water-based solution.
 
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Least expensive pre-mixed water based item is Ortho Home Defense from Lowes or Home Depot.
I believe it contains about 0.5% bifenthrin in a water-based solution.

I use Ortho Home Defense and this stuff is magic. Kind of scary how quickly it kills insects though. Still, does it's job.
 
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