Not familiar with that purina feed. But if you say it can be fed via gravity self feeders then alright. Self feeders will keep your feed dry unlike a trough feeder unless it is a covered variety. Trough feeding each day forces you to go out and see the animals regularly which is best for taking good care of them. You will notice issues sooner. Self feeders tend to have fewer issues with birds, but do not end bird problems. Self feeders are good for those times when you want to go away for a couple days also. It is easier to ask and trust someone to just stop by and make sure the water units are working instead of asking them to carry feed also.
