text:  Well, no, they came in because a lot of times the bats are living in the attics of a lot of these older buildings and houses. Okay. So they may find their way down to the sleeping quarters or your kitchen, and you get woken up by them. So anytime something like that happens, we automatically test the bat. Perfect. Whether or not we know there's been exposure, because we just don't know. Here's the goofiest question I'm going to ask you. How do you tell? Is there any way to see if a bat is...