It drains into the sink below the drain. A clog there could do it. Try one of those pronged drain rippers in the drain.
If that didn't work I would try compressed air or just pull the sink and check it out.
It drains into the sink below the drain. A clog there could do it. Try one of those pronged drain rippers in the drain.
If that didn't work I would try compressed air or just pull the sink and check it out.
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