You are supposed to leave the house yourself when you bug bomb, so snakes in the same place as the bomb would most likely kill them also. You could remove the snakes temporarily from the house (garage or shed with a temp source of heat perhaps?), bomb it, once the mist settles, clean up everything extremely well (I mean wash the rack, tubs, new beeding, ect.) then everything should be fine.

I have 2 collections, the established collection and the quarantine collection. The quarantine collection only becomes the establish collection after X amount of time. If I bring a new snake home that timer resets. When I bring a new snake home, I do put the quarantine collection at risk. It is up to you if you want to have more than one quarantine collection, personally I have not done that yet.