Unfortunately yes. Homes are ideal environments for these nasty little creatures. If you see one there's probably many more. They are nocturnal creatures so they hide during the daytime, and come out to play when you're asleep. Sometimes if you see them during the day this means their being overcrowded, and don't have a choice. If your neighbor enters your home or vice versa than the chances double for you to obtain them. They can sneak in on your person, in a purse/bag, etc. Good luck with the battle if you do obtain them. They're tricky little bastards to get rid of.