The hole in your sink that smells
How to clean a sink overflow
Clean the overflow with a bottle brush and hot soapy water, then pour hot water through it.
Don't pour bleach into the overflow if you've used other cleaners; rinse with water first.
Never mix cleaning products. Bleach plus ammonia, vinegar or other acids releases toxic gases. Use one product at a time, rinse between them, ventilate, and unplug appliances before you clean them.
Step by step
- Push a thin bottle brush through the overflow hole and scrub
- Pour hot soapy water into the overflow
- Rinse with clean hot water
FAQ
Is it safe to clean a sink overflow at home?
Yes, with care. Don't pour bleach into the overflow if you've used other cleaners; rinse with water first. Never mix cleaning products. Bleach plus ammonia, vinegar or other acids releases toxic gases. Use one product at a time, rinse between them, ventilate, and unplug appliances before you clean them.
How often should I do this?
Monthly for most appliances, or as soon as you notice smells, residue or slower performance. Your manual has the final word.