THE SHORT ANSWER
Chemical products can be hazardous to handle, may damage some plumbing materials or finishes, and can leave caustic liquid trapped behind a stubborn blockage. A plunger or appropriate mechanical cleaning is usually a better starting point. Tell your plumber if you have already poured chemicals down the drain.
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For more context about this type of plumbing issue, read our related Oklahoma City guide.
Read the related VIP plumbing guideEducational information, not a remote diagnosis. The right repair requires an onsite assessment. Plumbing conditions, safety concerns and local requirements vary. Stop using unsafe equipment and seek qualified help for gas, sewage, electricity or flooding hazards. See how we develop and update our homeowner guides.
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