Since I have pretty much all of my snakes on some form of loose substrate: aspen, cypress mulch, I prefer feeding them in a separate container to avoid them ingesting something that could cause them to be impacted.
It's funny that this thread is brought up as I was feeding my snakes last night and when it came to my boa (9 months, 3 1/2') she has become quite an aggressive girl at feeding time. I know it's just a question of time before she tags me good when I'm either taking her out for feeding or putting her back home afterwards. She almost did last night!
So, I am changing the substrate in her enclosure in a couple of days to newspaper cause she will be eating in her enclosure from now on!
Keeper of 5 snakes, leopard geckos, 1 green iguana, 20+ tarantulas, 2 dogs & a bunch of rats!