Hay, delivered freely on the bottom of the cages is a lose-lose situtation, most of it lands under the cages, to be transfered to the compost pile. By adding wire cylinders to stuff the hay within works for us. The wire is 2 by 3 inches, the 3 inch portion curved around a 3 inch PVC pipe equals a good sized circle, 6- 2 inch squares equals the height, plus the rabbits enjoy haveing something to play with whether full or empty. That is 15 inches round, clipped by 'J' clips, 12 inches tall, hand stuffed as full as I can make it. Got two 'Thank you' notes allready. And at $14.00 per bale this is a good savings.