Too add to what Satomi said, if you're breeding on a small scale that 50 pound bag lasts a long time. I put mine in big baggies in the freezer. I don't think I'm finishing that bag off for a long time. Some people say their rat mommas look very skinny while their nursing when they use dog food. My mommas still look nice and healthy. Gotta give them the proper nutrition to make good babies for your snakes. Even if they're feeders or feeder breeders, nutrition is still important. I find that will all pets, it's a big upfront cost and then a small (ok horse's aren't a small cost) maintenance cost from then on. Buy/make the tubs, buy a bag of food, water bottles, and a large bag of bedding and you'll be good for a while.