I house two of my BPs together so feeding them in their enclosure has never been an option for me. I have three in total and I feed them all in separate tubs and never had a problem. Also, since I feed live, I don't feel comfortable in having mice go into the snake's snug cave and biting or chewing on them. Another thing about feeding live is that if you have the mice roam around the terrarium, they will crap on merely everything and I don't feel that very sanitary for my pets.

At the end of the day it's a personal choice whether you feed in the terrarium or in a separate tub, I've been feeding in separate tub for quite a while now and it works for me very well. I bought a couple of semi clear tubs from Target and I just throw my snake in there, then throw the mouse in, and call it a day. That way I can observe the feedings and make sure my babies are safe. If the mice poop in the feeding tub, I just shake it out and that's it. No mess. I know some people here won't agree with me, but there's more than one way to do something. It just all depends on your preference.