I unfortunately had them when new people moved into our old apartment complex. My son and I were getting eaten the most, we would wake up with these small clusters of bites on our arms neck face, and we just thought it was mosquitos. Well for some reason I looked up bed bugs and saw where to look for them. Usually in the crevices of your bed where it is sewn together. Let me tell you we began looking and it was the most horrible thing. At first we were just noticing these little brown marks on the bed, which happened to be our dry blood. Then we saw these small things in one corner that were clustered together. They looked like small lentils, until I touched them and they all began to move. The apartment complex paid for the exterminator who treated the house twice, we had to keep our chinchillas out for a few hours with us while the chemicals acted. The second treatment was the same. We ended up throwing away our bed and futon, got a new bed, and put a plastic bed bug cover on it. Luckily all that fixed the problem, but I know depending on how bad they are they can be anywhere. I have heard of them being in wood furniture, couches, beds, and even kids stuffed animals. The best method that I have heard if you just cannot get rid of them is having a professional come in and heat your house up to like 150 degrees and letting them cook. Hope this helped, and to prevent them just don't travel or stay in hotels lol, but your best bet is to cover your mattresses, you can buy the covers at like walmart.