We buy it at WalMart. Chris Jr. got a Red Ryder bb gun for Christmas. They shot about 20-30 bbs through the container. We put a small container with soaked paper towels inside with the chicken eggs.
The duck eggs went to a paper egg carton. The egg carton was elevated on one end by a half of a red brick. We rotated the duck eggs every time we remembered
"Unless someone like you cares a whole awful lot, Nothing is going to get better, It's not."