Understanding that your old time dog food storage container has now overshot its life span, you may naturally be interested in replacing it. In doing so your concern would be to find a better item while maintaining the cost-benefit equilibrium.
Remember, the first component of a dog food container or for that matter any container type commodity, is the lid. The seal gets weaker and remains air tight no more and the lid gets looser. Several disadvantages arise due to lid getting loose. Foods are not preserved, spill over to outside due to sudden jerks or falls, and the worst of all, the food inside is invaded by ants and other insects wasting and at the same time polluting the contents. To prevent this you may try fastening the lid top with something like a dog seat belt but the possibility of solving your problem this way is remote.
Despite your attempts when you fail to make good the old one, you have to go for a replacement. There are many providers in the market all of whom will claim their product to be the best of the lot. You need not go blindly by their version and select for yourself the best one depending on your budget and requirements just as you would have done in case of the dog carriers of any type.
The best possible way is to surf the Internet. As you find dog beds online you can also find dog food containers on line. Internet is a repository of information and you will get all feedbacks on best quality dog food storage containers there.