Outside Drain Unblocker [updated] Page

Chemical cleaners containing sodium hydroxide or potassium hydroxide, such as HG Drain Unblocker Exterior or Buster Outdoor Gel, are designed to melt fat and organic build-up.

Maintaining clean drains, not fixing severe blockages. outside drain unblocker

Use a heavy-duty ¾-inch drain auger (at least 50 feet long). Feed the cable into the drain until you feel resistance, then crank the handle to break through or hook the blockage. outside drain unblocker

Pro Tip: Use to prevent them from unscrewing and getting lost inside the drain. outside drain unblocker

How to Fix a Blocked Drain Outside: Expert Tips and Solutions