Laboratory Rodent Diet is recommended for rats, mice, hamsters, and gerbils. This diet is a complete life cycle diet formulated using managed formulation, delivering Constant Nutrition. This is paired with the selection of highest quality ingredients to assure minimal inherent biological variation in long-term studies. It is formulated for life-cycle nutrition; however, it is not designed for maximizing production in mouse bredding colonies. This product has been the standard of biomedical research for 70 years.