A baby formula mixer helps make sure you can offer the smoothest and safest formula for your growing baby. Baby formula mixers usually have an independent mixing paddle of some type to help break up chunks of the baby formula when you mix it for a bottle. A few mixers on the market are actually a bottle that allows you to mix on demand without extra equipment. Electric mixers are the top-of-the-line choice providing you a baby formula mixing option that mixes on demand. Consider how much formula you will want or need to keep mixed at a time before purchasing. If you need to prepare a whole day of bottles for daycare or the babysitter, then you might consider a large batch mixer. If you need something that works on the go, the bottle with a built in mixer will work better for your needs.