Filled it up for it's first trial run. Only an overnight trip, but wanted to test capacity. We use Taste of The Wild Ancient Grain adult, shown for reference. It took 37.5 cups, which is 12.5 days for our 2 dogs. That's great. could have filled it more, but wanted room to roll down the closure. Seems really well made. I think the beagle can smell the food inside, but not the Shiba. No surprise there. Happy with it so far, much better than the giant plastic ware box we were using.See full review