How to Unclog a Laundry / Utility Sink
What You'll Need
- 1/2 cup
- 1 cup
- Kettle
- 1
- 1
Step-by-Step Method
1
Remove visible lint
Check the drain opening for lint and fabric debris. Pull out any visible accumulation.
Washing machine lint is the #1 cause of laundry drain clogs. A lint trap on the discharge hose prevents this.
2
Baking soda and vinegar
Pour 1/2 cup baking soda followed by 1 cup vinegar. Cover the drain. Wait 30 minutes. Flush with boiling water.
3
Snake if needed
If still slow, use a drain snake. Laundry clogs are often 3-5 feet from the drain opening where lint accumulates.
🚫 What NOT to Do
- Do not use chemical drain cleaners
- Do not ignore slow drainage (full backups cause water damage)
💡 Pro Tips from The Freak
- Install a lint trap on your washing machine discharge hose. Costs under $5 and prevents almost all laundry drain clogs.
- Run hot water through the drain after each load to flush soap and lint residue.
Frequently Asked Questions
Washing machine lint, fabric softener residue, and soap scum combine to form a thick sludge in the drain. Install a lint trap on the discharge hose and run hot water after each load to prevent buildup.
Sources & Methodology
Laundry drain clogs primarily caused by lint accumulation combined with soap residue.
Last reviewed: March 20, 2026