I use insects as treats in my training regimen. Generally most practical form is mealworms but they are pricey. Crickets also good and birds seem to love the chase crickets provide. Today I used Can O' Supermealworms by Zoo Meds. Birds pounded them down. If they came in a larger container than 35 g they might be more cost effective than live version. I also have seen a dried version used for song birds. Has anyone tried feedings those to chickens?