I bought bags from Cornerstone, but have had trouble using them successfully. Since we just have a few birds I didn't buy the stapler and staples and tied the bag. I used the correct sized bags. I think I followed the instructions pretty closely, but it took longer than the instructions noted for the air to exit and the bags to shrink and several of the bags broke open near the birds' "leg bones" or the wing tips popped through. I ended up using two bags (and this is after discarding the ones that popped, so three?) on each bird which is a little expensive. If anyone has found a way around these problems, please let us all know.