Any other item that is not food, including wood, glass, metal, cigarette butts and sponges must be prevented from passing through sink drains. Just like coffee grounds, these items mentioned can jam the garbage disposal or clog the drains. Choose the trash can if you are unsure where to put waste items in the kitchen. How to Unclog a Sink Clogged with Coffee Grounds ... If you're lucky, that's all you need to do, but often, coffee grounds can be a little more tricky to get rid of. So if the above didn't clear your blockage, or you just want

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