I love watching Dezzy eat her hay. It starts nicely contained in the hay holders, and then she'll start digging. She'll pick up a few pieces, take a few nibbles, and then toss the rest. Some, she rejects without even trying. Pretty soon there's hay everywhere--all over the shelf, hanging from the shelves and toys, littering the bedding and of course the floor. It's quite a production.
I combat it a bit by giving her smaller amounts of fresh hay throughout the day and whatever ends up on the floor of her cage (or the bedroom), I just throw out because I've discovered she won't eat it once she's rejected it. I've also discovered that she loves it when I give her fresh hay during playtime--I just put it on the floor (I have wood floors, so it's easy to clean up), and she really goes to town.
Sometimes, I think she just likes making a mess!