The following morning, I stood outside the bathroom, listening as Mark flushed the upstairs toilet. That same hollow gurgle echoed through the pipes. Suddenly, the downstairs toilet bubbled violently, and a terrible smell filled the hallway. I grabbed my phone, ready to call a plumber, when Mark suggested trying the rock salt trick first. I hesitated, remembering the article’s warning about roots, but he had already opened the bag.
We poured the salt into the toilet and waited. For several seconds, nothing happened. Then came a strange knocking sound beneath the bathroom floor. Mark froze, looked at me, and whispered, “Did you hear that?” Click continue reading below.
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