Juicy mealworms for your critters. Fed a strict diet of wheat bran and organic carrots. Worms come in a mixed variety of sizes so they last a long time - just feed off the largest ones first, while the smaller ones continue to grow! If you're buying worms to start farming them you'll appreciate their differing sizes since they will pupate at staggered times. Be sure to select HOLD FOR PICKUP if your local temperature is above or below 50-80°F.