Step 2 · Attempt a Natural Degreasing Flush
For a mild grease clog, this non-invasive method can work. Boil a large pot of water. Pour about half of it slowly down the drain to start melting the grease. Immediately follow with a half-cup of baking soda and a mixture of one cup of white vinegar and one cup of hot water. You'll hear fizzing as the reaction occurs. Place a drain plug over the opening and let it sit for 15-20 minutes. Finally, flush the drain with the remaining boiling water. Note: Be cautious with boiling water if you have PVC pipes; very hot tap water is a safer alternative.