Oh, Boy. A stopped-up drain. Are you staring at a clogged kitchen sink? Is the stagnating water in the sink making you feel sick? The biggest reason why kitchen sinks clog is because people aren’t mindful of what they’re throwing down the drain. Anything and everything go, from eggshells to kitchen oils. But with a such cavalier attitude, you can either jam the garbage disposal or cause a buildup along the pipe’s walls.