I cut a few cords of (green) maple and cherry (blowdowns) last April or May, and I don't know, the planets must have been aligned perfectly or something, but that wood was loaded with PP beetles. When I went to start bringing in some of the wood last winter to burn it, there were many, many pounds of firewood converted to frass. Seemed like every time I made a "firewood run" to bring a truckload into the house, I got that miserable frass blowing into my eyes...it's hard to get out of your eyes and a real irritant!
I Googled PP beetles to make sure they weren't a threat to the wood in your house when you brought them into the house with your firewood, and the paper I found claimed they present no threat...but I'm not entirely convinced. The piles of frass continued appearing long after the wood was in the house...