How to stop P-trap shower drain smell?

Author: Miss Aniya Schmidt IV  |  Last update: Monday, March 16, 2026

To eliminate odors coming from a dry p-trap, pour half a gallon of water into the trap to restore the barrier. It will prevent the odors from seeping through the drain. Another helpful method is to add a cup of white vinegar bleach to get rid of larvae and slow down the evaporation.

How to fix P-trap smell in shower?

Fortunately, cleaning your P-trap is a simple process and is an excellent way to deodorize a smelly shower drain. Simply pour approximately 1/2 cup of baking soda down the drain, followed by about 1/2 cup of distilled white vinegar.

How do you prevent the smell in P traps?

there should be as or p trap in the line before the floor waste to stop the foul odours. the trap holds a small amount of water in it this stops the vapours it is replenished each time water flows down the waste.

Why does my drain smell bad but no blockage?

This likely means that the drain trap has dried out. Decomposing sewage produces bad-smelling gas in sewers. Drains have a curved section that holds water and prevents sewer gas from entering the house. Pour a quart or so of water into your drain, and it should block the smell.

What is the best thing to stop drains from smelling?

Boiling water poured into the drain is a quick cleanser for minor odors. A baking soda, vinegar, and boiling water combo can add extra power for breaking up the buildup in your drain's pipes. Periodically adding baking soda down your drain can keep the sink fresh and odor-free.

How to clean a smelly drain in shower or sink

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

Baking soda is abrasive, which, when used in large quantities, will cause the drain more damage. Additionally, the acidic nature of vinegar can eat away rubber and metal, damaging the plumbing. As these products break down the pipe and connectors in the plumbing in your home, it will cause more clogs over time.

What is the best product to get rid of smelly drains?

Try using vinegar and baking soda. Pour one cup of baking soda then one cup of vinegar down an outside drain then wait 20 – 30 minutes before pouring a large amount of boiling water down the drain. External drains can get blocked with mud which can be removed manually.

How to clean a shower drain that smells?

Vinegar, Baking Soda and Hot Water

A concoction of white vinegar, baking soda, and hot water will help to eliminate odours from smelly shower drains effectively, as well as removing a buildup of grease, bacteria, and any other biological material residue (as long as the blockage is not severe).

How to clean a P-trap shower drain?

First, add 1/2 cup of baking soda to a mixing jug, then tip the baking soda into the shower drain. Baking soda will act as a deodoriser and natural cleaner. Pour 1/2 cup of vinegar into the shower drain right after the baking soda. The vinegar and baking soda will react and form froth.

Why does my bathtub drain smell like sewer?

There could be odor-causing bacteria feeding on debris in your pipes. This process will give off a foul-smelling hydrogen sulfide gas, which smells like sewage or rotten eggs. Also, mold grows where it's warm and wet — and mold growth on the debris causing a drain clog can also cause a bad smell.

What is the P-trap anti smell?

A P trap is a pipe which prevents the smell of sewage rising up from entering the room where the outlet is located. The addition of a 90 degree fitting on the outlet side of a U-bend holds water which blocks gases and bacteria while allowing waste water to drain at the same time.

How can I make my traps scent free?

Wear Gloves

These gloves act as a protective barrier, preventing the transfer of your skin's oils and scents onto the trap. Ensure gloves fit snugly to your hands and wrists when putting on them.

How do you deodorize a P-trap?

To eliminate odors coming from a dry p-trap, pour half a gallon of water into the trap to restore the barrier. It will prevent the odors from seeping through the drain. Another helpful method is to add a cup of white vinegar bleach to get rid of larvae and slow down the evaporation.

Why does my shower drain keep smelling back?

Pour one cup of vinegar down the drain. Pour a half cup of baking soda immediately after the vinegar. Wait 2 hours then pour a gallon of hot water down the drain. Run a drain brush down the drain to remove any leftover debris.

How to clean a shower drain that can't be removed?

First, if you have metal pipes, pour boiling water down the drain. Then remove hair from the drain. If that doesn't work, use a mixture of vinegar and baking soda. If the clog persists, use a plunger, plumber's snake or chemical drain opener.

Why does my shower drain smell but not blocked?

In conclusion, sewage gasses, biofilm accumulation, bacterial development, and P-trap drying up can all be responsible for the foul odour emanating from a shower drain that appears to be unclogged.

How do I know if my P-trap is bad?

Is your P-trap working properly? If you detect any foul odors near the P-trap that remind you of a smell similar to rotten eggs, then it means that there is hydrogen sulfide present. This, and other harmful gases, bacteria, and viruses, can get into the house if your plumbing trap has malfunctioned.

How to remove bad smell from bathroom drain?

Once you unclog your drain, mix one part bleach with one part water and pour it down the drain to kill the odor-causing bacteria. If you do this and it still smells, it might be time to call a plumber. You could have a faulty P-trap, which prevents sewer gas from entering your bathroom.

How does a shower trap stop smelling?

Shower traps come in a variety of designs and applications. Some consist of a U-shaped pipe or fitting that holds a small amount of water that creates a barrier that blocks nasty odours and sewer gasses from backing up into the bathroom or wetroom.

Is it okay to pour boiling water down the shower drain?

Use Boiling Water

Sometimes the simplest solutions are the most effective. Boiling water helps break down grease and soap holding the clog together to clear the blockage. This method is easy and only requires one or two steps.

Can I leave Mr. Muscle drain Gel overnight?

Using innovative drain unblocking technology, Mr Muscle's new biodegradable formula delivers the power to unclog bathroom drains in just 5 hours. Use it at night, let it work its magic and wake up to freely flowing drains.

What do you put down a drain to stop it smelling?

Baking soda and vinegar are worth exploring to clean a stinky drain. Run your hot faucet for several seconds before turning it off. Tip one cup of baking soda down your drain, followed by two cups of hot vinegar. Let it fizz, then flush the drain with hot tap water after one hour.

Is green gobbler safe on pipes?

This is a big deal when you live in a home with a septic system. We were always hesitant to use certain products in the past and Green Gobbler's products truly give us peace of mind. The Green Gobbler Drain Clog Dissolverdoes not contain bleach or sodium hydroxide, and it's safe for PVC and copper pipes.

Does pouring vinegar down the drain make it smell better?

Vinegar is a common household product that can be used to kill germs, mold, and bacteria. The unique properties found in this common item can also help rid your sink of unpleasant odors. Simply pour one cup of vinegar down the drain and wait for 30 minutes.

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