For a grease-based clog, chemical drain cleaners are the enemy—they turn grease into a hard, soap-like wax that seals pipes forever. Sarah boiled her largest stockpot full of water. Slowly, carefully, she poured it directly into the open outdoor drain. The hot water melted the semi-solid grease coating the pipe walls, and she watched the water level begin to drop. She repeated this three times, waiting five minutes between pours.
“It’s not the inside pipes,” her husband Tom said, peering under the cabinet. “The water’s draining, just… slowly.” how to unblock kitchen drain outside
If you have a kitchen sink on an exterior wall, especially in older homes, your drainpipe likely exits the house and meets the main sewer line through an outdoor access point (a cleanout cap) or simply a grate-covered pipe. And that’s where the trouble lives. For a grease-based clog, chemical drain cleaners are
To make sure the drain was truly clear, Sarah ran the kitchen sink at full force for two minutes while Tom watched the outdoor drain. Water flowed freely, with no backup. Then, for good measure, she poured a bucket of water mixed with a cup of white vinegar down the outside drain to neutralize any remaining odors and break down microscopic grease. The hot water melted the semi-solid grease coating