Don't panic!
True, cigar beetle eggs can be in any tobacco leaf. But just because your humidor's temp is high doesn't mean that you are going to get tobacco beetles.
First of all, the 75 degree temp is a myth. Tobacco beetle eggs can hatch at 65 degrees. It's a proven fact.
Knock on wood, in summers past my room got quite warm. Well into the supposed egg hatching range and I never once saw a beetle. Again I'm knocking on wood!
The tobacco industry takes lots of precautions against tobacco beetles. Many large distributors such as JR even freeze their inventory as it arrives, or so I was told by Lew Rothman once on an internet chat at JR's. Or was is Steve Saka? No matter. Don't go and freeze your cigars.
Again, I'm not saying that it's impossible. Just uncommon in todays market.
If I remember right, the highest risk comes from some Cuban sources and some of the small, kitchy boutique rollers that put out small batches with little quality control.
If you are still concerned, check your smokes regularly. Look for tiny holes in the wrapper the size of a pinhead, reddish dust in the box and of course the actual beetles.
You mentioned that you have an air conditioner in the room. Do you run it all day if it is hot? You should for the sake of maintaining rh as well as a stable temp. When the temp rises so does the humidity in the humidor.
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