How do you clean a smelly washing machine drain pipe?

Author: scraper  |  Last update: Saturday, September 19, 2026

To get rid of a bad smell from your washing machine drain, first refill the P-trap with fresh water to block sewer gases. Then, deep clean the system by pouring 12 12 cup of baking soda followed by 12 12 cup of white vinegar down the drain, and finally pour in a cup of bleach.

How to fix bad smell from washing machine drain pipe?

5 Quick Ways To Fix Washing Machine Drain Smell

  1. Start by cleaning the drain filter. ...
  2. Run a hot empty wash with vinegar and bicarbonate of soda. ...
  3. Inspect and clean the drain hose. ...
  4. Clean the door seal and the detergent drawer. ...
  5. Let your machine breathe.

What can I pour down my laundry drain to get rid of smell?

2. Baking Soda, Vinegar and Boiling Water

  • Start by pouring boiling water into the drain to break up any hard residue.
  • Then, pour ½ cup of baking soda into the drain.
  • Afterwards, pour ½ cup to 1 cup of white cleaning vinegar into the drain.
  • Allow the mixture to sit for several minutes.

What do plumbers recommend for smelly drains?

You can also deodorize drains and help smelly drains with a combination of baking soda and vinegar. These ingredients, when used together, can also sometimes help to clear drain clogs.

Why does it smell like sewer when my washing machine drains?

A: A sewage-like smell near a washer is often caused by odor coming from the drain/standpipe, buildup inside the washer (soap residue, lint, mildew), a drain hose installation issue, or water that is not draining fully.

Washing Machine - Laundry Room Smell / Odor

How do I stop my drain from smelling like sewage?

To quickly get rid of a sewage smell, first verify your drain's P-trap has water by running the tap. Then, scrub away odor-causing biofilm inside the pipe using a drain brush and Enzymatic Drain Cleaner. Finally, deodorize with a mixture of baking soda and vinegar.

What is the old lady's smell called?

The characteristic "old age smell" is scientifically known as nonenal (or 2-nonenal). It is a chemical compound produced when the skin's natural oils and fatty acids break down and oxidize as we age.

Why should you never use baking soda and vinegar to unclog a drain?

Baking soda and vinegar do not effectively unclog drains. Instead of clearing debris, mixing them chemically neutralizes both ingredients into salt water. The fizzing reaction is visually satisfying but largely escapes upwards, offering zero power to dissolve grease, hair, or stubborn sludge.

How to fix an extremely smelly drain?

How to stop the smell

  1. Carefully pour half a cup of baking soda down the plughole.
  2. Pour one cup of vinegar down the plughole after the baking soda.
  3. Let the solution foam up; leave it for an hour or more to work.
  4. Pour hot boiling water down the sink after an hour to flush it through.

Why pour salt down the drain every night?

Pouring salt down your drain at night is a popular DIY plumbing trick used for routine maintenance. The goal is to take advantage of the salt's coarse texture and natural moisture-absorbing properties.

What makes sewer smell go away?

Eliminating a sewer smell requires tackling the root cause. Start by running water down unused drains to seal the pipes. For persistent odors, clear the drain with a DIY mixture, clean the overflow, or replace worn plumbing parts.

How do you clean sludge out of a washing machine drain pipe?

Cleaning sludge (soap scum and lint) from a washing machine drain requires breaking down the buildup without pushing it further into your plumbing. Use a mixture of baking soda, vinegar, and hot water for minor gunk, or a plumber's auger and manual flushing for stubborn clogs.

Is it a good idea to put vinegar in your washing machine?

Yes, you can use distilled white vinegar to soften clothes, remove odors, and eliminate detergent buildup. However, because of its acidity, use it sparingly and never put it directly in the main wash or mix it with bleach, as this can corrode rubber seals and create toxic fumes.

What to pour down a washing machine drain for smell?

Flush the drain with baking soda and vinegar

  • Pour half a cup of baking soda into the drain pipe.
  • Follow with half a cup of white vinegar.
  • Let the mixture fizz and sit for about 15 minutes.
  • Flush the drain with hot water to clear any remaining residue.

How do I clean my washing machine drain pipe?

Use a drain snake or plumber's auger to break up debris inside the standpipe, feeding it down slowly until you feel resistance, then rotating it to loosen the blockage. Pour a mixture of hot water and dish soap into the standpipe to help dissolve grease and detergent residue before snaking.

Is a plumber needed for a stinky washer?

Check your standpipe. If bad smells continue, you may have a partial blockage in your standpipe. If you suspect this is the case, use a drain unblocker to try to clear the obstruction. If this does not solve the problem, you may need to call a professional plumber to resolve the issue.

Why does my drain smell bad but not clogged?

Bacterial growth: Inside your drain, there are bacteria that feed on organic matter. Static water can build up in the P-trap, the U-shaped pipe beneath the drain, when the bathroom fixture doesn't run for a while. This stagnant water turns into a haven for germs, which give out foul smells.

What not to pour down a drain?

Items to Never Flush or Pour Down the Drain:

  • Sanitary Products, Paper Towels, Diapers, Baby Wipes, and Facial Tissues. ...
  • Fats, Oils, and Grease (FOG) ...
  • Prescription and Over-the-Counter Medications. ...
  • Kitty Litter. ...
  • Household Hazardous Materials. ...
  • Food Waste, Coffee Grounds, Eggshells, Hair, and Dental Floss.

What can I pour down the drain to stop the smell?

Vinegar and baking soda

For this method, pour ½ cup baking soda into the drain opening, then follow this with 1 cup of vinegar. The ingredients will start to react, so plug the drain with a stopper or old rag to seal in the solution. Wait for 30 minutes – 1 hour, then flush the mixture from the drain with hot water.

Does Dawn really unclog drains?

A straightforward yet effective approach to addressing a clogged drain pipe involves simply using hot water mixed with dish soap. This method, ideal for tackling minor blockages, leverages the degreasing power of dish soap combined with the force of hot water to dislodge and dissolve clog-causing residue.

Why shouldn't you pour boiling water down the drain?

Pouring boiling water down your drain can soften and warp PVC pipes, weaken the glue in pipe joints, and damage rubber gaskets. Instead of clearing grease, boiling water just melts it, pushing it further down the pipe where it hardens and creates a stubborn, hidden clog.

Why pour vinegar down the drain in October?

As the fall rains intensify and the seasons shift, one surprising tip is getting renewed attention: pouring vinegar down your drains to help prevent clogs.

At what age do seniors start to smell?

"Old person smell" can begin as early as age 40, as the body produces more of the compound 2-nonenal. This, often described as a grassy, greasy, or musty odor, is a natural part of aging caused by the breakdown of unsaturated fatty acids and declining skin antioxidant defenses. While it starts around 40, it becomes more noticeable in the 50s and beyond.

What is a grandma scent?

The "aroma of grandma" is a deeply nostalgic sensory blend. It most commonly features warm baking spices like cinnamon, baked apples, and vanilla, mingled with classic floral notes like rose or lavender, and the comforting, fresh-linen smell of a well-loved home.

Why do I smell myself through my pants even after showering?

Smelling yourself through your pants even after showering is surprisingly common and usually caused by trapped sweat, bacteria, or a shift in pH rather than poor hygiene. The groin has dense sweat glands, and moisture trapped by synthetic fabrics or tight clothing causes bacteria to break down the sweat, amplifying the scent.

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