Bathroom Sink Pop-Up Stoppers: Why They Clog and F

Bathroom sink pop-up stoppers are convenient—until they start to drain slowly, stick in place, or refuse to seal properly. When a pop-up won’t work as expected, the problem is usually more than “just a clog.” Hair, soap residue, toothpaste particles, and hard-water minerals can accumulate in the stopper body, the drain throat, and the linkage that raises and lowers the plug.