depends on what your preferences are. i think they're a fantastic idea, esp if your horses is on multiple supplements. no more measuring, no more wondering if your horse got his supplements that day, no more ordering, etc. they come in the mail already set out for you. they're great for traveling, just pull out the number of paks you need for the days you'll be gone. plus anything you order from smartpak has free shipping if you can wait for it to be sent with your paks, etc.