Maintenance & Repairs 1 decade ago. Best product for a clogged sink? Every now and then both sides of my kitchen sink make a gurgling noise and then fill up about 3 inches. It's dirty water. And after about a minute it goes back down. Is there a product I could buy to flush it out? If you've used a commercial product before reviewing this list and it didn't break apart the clog, call a plumber. You don't want to add anything to the backed If it's a bathroom sink that's slow to empty or plugged with hair and

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