Gotcha, well tell your room mate that they are risking giving their snake RI which will lead to expensive vet bills. And i mean if its not eating you could try the separate enclosure again, but really there's no reason to feed in a separate container. Tell him to put paper down over the aspen if he is that uncomfortable. I mean snakes eat stuff like that in the wild and are fine, it would take a lot of aspen to do damage.