Let's see, our 40 lbs. bags gets opened and then not quite half of it goes in the storage area of their raised bowls, most of the other half goes into the other one, and there's a little left over after filling their bowls that stays in the bag until they need another bowl fill up. But, we're getting Sierra a raised bowl in the next couple of days too so I'll have plenty of room in the 3 of those. The only problem, me trying to take the 40 lb. bag and fill it into those, not a pretty site. I need to work out more while Brian's gone, that way it will be no problem soon! I've gotten lazy lately and weak, I hate it!