I hope this visual helps. Just take a thin blade and slide it under the smaller cap in the center. Then it pops up. Underneath is the traditional rubber skin you can puncture easily.Hi, not sure if this is the right place to ask, but I just bought some durvet vitamin b complex to use in my ducks, and I can’t figure out how to open it. Does it just twist off, pop off, or do I need to like stab it open? I’ve tried twisting and popping and it won’t come off and I can’t find instructions how to open it anywhere. Sorry, I’m sure it’s probably a lot simpler than I am making it.

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