I'm thinking of switching away from the ration balancer to try to save a bit more calories, and it seems that this is one of the better mineral supplements that also comes as a pellet (necessary for me since I'm not able to wet his feed to mix in a powder). I figure it will save about 300 calories a day which could make a difference in keeping his weight in a better place. Generally he's not a picky eater (rather the opposite) but of course he'd easily be able to avoid eating the pellets if he wanted to since they'll just be mixed with a couple of other pelleted supps and a handful of dry timothy pellets.