DIY & Crafts ruling
Can varnish and polyurethane go down the drain?
Keep it in the labeled container and away from every drain.
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Sink or drainNo
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Garbage disposalNo
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ToiletNo
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Septic systemNo
01
Why the pipe objects
These finishes contain resins and often solvents intended to form a tough, water-resistant film.
02
Do this instead
Keep leftovers sealed and use a paint or household-hazardous-waste collection program.
03
Already did it?
Do not mix in another product or attempt to neutralize it. Ventilate if the label directs, keep people and pets away, and call your local wastewater or hazardous-waste authority.