Although not intended to feed as a sole ration, CalciWorms® are premium feeder insects that are naturally high in calcium. Very similar to waxworms in texture, CalciWorms® are the direct result of the need for a nutritious live food source that is naturally high in calcium. The naturally high calcium level in CalciWorms® reduces the dependency on gut loading and dusting for calcium. Timberline sells CalciWorms® in one size.