We recommend buying 15-50 pound bags of dog food. Larger sizes are discounted and more economical. To keep your food fresh and safe from bugs, a container is good. We use a lidded container on wheels. The IRIS brand gives you food and treat storage as well as a scoop at a great price. If you have never opened bulk dog food, you can use a knife or scissors. Also, if it is stitched at the top, you can find the end of the thread and pull - this usually opens the bag very easily.