We live in Colorado at 7800 feet and have virtually no bugs at all. Very occasionally I'll see a small house spider (I'm an arachnophobe and all spiders seem huge to me, so believe me when I say they're really small), a single tiny ant or a housefly. That's it. We've never seen, heard or been bitten by a mosquito here. Our dog never had a tick or a flea here, either, though I understand they are out there.

We do get rats and mice in our garage, so we still have to pay an exterminator.