Meg is right, but also, if you feed the snake in their viv, they can get used to it, so when you put your hand it just to pick up your snake, your snake will think you have food and your snake may stike your hand. But if you have many snakes its a hassle to feed them in seperate containers, so I just feed most of mine in their vivs, but I ALWAYS put paper towle under the mouse in their viv just to make sure they dont injest and substrate. But im sure you dont have many snakes Poshey
Alex