I feed mine in a separate tub with a lid that seals tight. my one snake, Shadow, is a shy eater. I usually have to put him in his tub in the morning with his food and leave him alone until I come home for lunch. if there are ANY distractions at all, he wont eat. I have tried to leave a pinky in his viv with him, but i swear he has the attention span of a goldfish. "oh food! oh look a branch for me to climb on! Hey look Food! oh wait whats that over there?"
My other snakes dont care. I've put them in their tubs and before i can even get the lid on, they're already eating.
I also use the opportunity to clean their vivs and to handle them before I feed them.