They're the reason I keep delaying any electric work in the crawl space. I usually bomb/fog the place the day before going in. I knew they were there, but what really got me was that one time I was on my back fixing the spaghetti bowl of old BX cable under the living room floor when I started having a weird feeling, like being watched...there was 4 of them staring at me from a joist nearby. Never managed to crawl out of there so fast before! The fact that they supposedly eat their own legs if food is scarce freaks me out even more!