Outside Drain Blocked With Fat [new] -

Pour it slowly directly into the drain. The heat melts the fat, while the soap breaks it down into an emulsion so it can be flushed away. 2. Natural Chemical Reaction (Baking Soda & Vinegar)

: Once you’ve broken up the mass, flush the drain thoroughly with a garden hose to wash away the remaining residue. When to Call the Pros outside drain blocked with fat

If multiple fixtures inside are backing up, the main sewer line may be the issue—call a professional. Pour it slowly directly into the drain