Q. Why is this a top resource article? “Weighing milk replacer powder and measuring water volume is the best way to ensure accurate mixing,” says Tom Earleywine, director of nutritional services with Land O’Lakes Animal Milk Products. “While it’s easy to get into a routine, it’s always a good idea to brush up on your mixing skills to ensure you’re providing consistent nutrition to your calves. These step-by-step mixing instructions are a great resource when you need a quick refresher.” It is easy to get into a habit of doing something the same way it has always been done. Mixing calf milk replacer is no exception.