Creative Foraging Systems 15 Small Refill Boxes, 1-3/4 W by 3-3/4 L More time devoted to food foraging means less time available to exhibit undesirable behaviors e.g. feather picking or screeching Boxes are free of glue and/or any toxins that might be harmful to your pet made from USDA approved food grade chipboard Chipboard is biodegradable Increase the challenges by adding additional foraging devices /toys Foraging improves your birds overall psychological and physical well being