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How Can I Unblock a Badly Blocked Drain Safely at Home?

You can try a few safe DIY steps before calling a plumber.

  • Plunge the fixture with a sink plunger.
  • Remove and clean the P-trap if accessible.
  • Run a handheld drain snake to break the blockage.
  • Use an enzymatic cleaner like Bio-Clean overnight. Stop and call if multiple drains back up, you smell foul odors, or hear gurgling. Those signs can mean a main sewer issue. We clear severe clogs with rooter service, hydro-jetting, and video camera inspection in Boulder and Denver.

Updated: 2025-11-03 00:00:00


Need help in Boulder, CO? Call (303) 451-5057 or book online. "Justin A. was on time, highly professional and fixed my drain line clog in less than an hour for a reasonable price that was quoted before he began." — Thomas Q.

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