Pest infestations usually aren’t particularly subtle. In fact, most people discover they have pests after running into obvious damage or the culprits themselves. They probably don’t feel this way, but people who run into their pests early are the lucky ones. The faster you run into your pests, the faster you can take steps to wipe them out. Unfortunately, it’s not always so easy to tell you have an infestation. Pests are shy. They don’t want to meet you any more than you want to meet them. It would be the ideal relationship, except that pests will damage your property whether or not you can see them. Some of this damage is hard to see until it’s significant. Here are four subtle but potentially expensive ways pests can make problems for you without ever crossing your path.