Hi, I have a colony I set up about 3 months ago and have just began feeding out of it. When I need some roaches I just grab them by the mid rear area, one by one. I've noticed that they often get "wet" and it kind of leaves my finger stinky too. I figured they are releasing waste as a defense mechanism, but today it appeared one was actually spitting up on me? I haven't found any info that touches on this. Anybody know what it is?

