That makes sense, my red knee isn't as aggressive of an eater as my GBB seems to be, so I'd consider prekilling, I just didn't know if there were other reasons behind it. I don't even know how to prekill? They move so darn fast, I can barely grab it by the leg with tongs and get it into the Ts enclosure without a struggle...how am I to squish it's head without squishing the whole body? lol