Not all pest problems show up in obvious ways. Some creep in quietly, one feeding the other, until the damage is done—and you’re left with a repair bill in the thousands. Let’s break down one of the most overlooked (but costly) pest chains we see in Montana homes. 1. Insects The first link in the chain. Insects like ants and beetles often go unchecked—because they seem harmless or “not that many.” But these bugs don’t just multiply fast, they also attract hungry wildlife. 2.