BOOST! your Healthy Mealworms for Chickens with a probiotic that clinical studies show daily use supports digestion and gut health. Healthy Mealworms are a tasty and nutritious treat your flock will love! Rich in protein and great for molting support, Zylina Healthy Mealworms are a hen favorite! Combined with the BOOST! Probiotic, Zylina Healthy Mealworms support feather growth, strong eggshells and an improved immune system. The Zylina Probiotic is administered in 2 simple steps: 1 - Pour the Entire Bottle of Probiotic in a 5 LB Bag of Mealworms or Grubs and 2 - Mix thoroughly and feed your flock. The Probiotic adheres to mealworms or grubs and chickens will devour the probiotic mealworm treat!