I have the same problem that also just started. There is only layer pellets in the feeder for over two years now. I did have this problem when I tried to go from crumbles to pellets, so I know now not to mix anything in with it. I topped it off on Sunday. Yesterday they had spilled a little, which is not unusual. Today it looks like they've pretty-much emptied the entire contents. If anyone figures it out, I'd love to hear how. The feeder has a small grid/grill in the bottom that is supposed to keep them from doing this!
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