Kaytee exact Hand Feeding Formula was one of the first "instant" formulas available and is one of the most researched and respected products used by professional breeders, veterinarians and conservation programs throughout the world. exact food's high-nutrient formula promotes growth, weaning, development and bright plumage. When used properly, exact food will support a healthy crop. exact Hand Feeding Formula contains probiotics to encourage a healthy population of intestinal microorganisms. The selected species have been chosen specifically for their vitality, stability, and overall benefits to a bird's system.