PetAg KMR Milk Replacement for Kittens Powder. Use as a partial or total replacement when mother's milk is inadequate, can also be given to the mother during the last two weeks of gestation or early lactation for an additional nutritional source. Contains L-arginine to prevent cataracts in newborns. Use as a partial or total replacement when mother's milk is inadequate, can also be given to the mother during the last two weeks of gestation or early lactation for an additional nutritional source. Contains L-arginine to prevent cataracts in newborns, powdered form mixes with water.