I think it's always better to feed the animal in his enclosure for a couple of reasons. One is due to the stress factor, the others include convenience and familiarity for the bp. If you are worried about your bp swallowing substrate you can place a paper towel on the area where you will be placing the prey item. You can also use your tongs to remove any substrate that is attached to the prey item as it is swallowed. I do both. Stay in peace and not pieces. Good luck. A.C.