To fix a smelly drain, start with natural options like pouring baking soda and white vinegar down the drain, letting it fizz, then flushing with hot water to break down gunk and neutralize odors; if that fails, try plunging, using a drain snake for hair clogs, or pouring boiling water to dissolve buildup, but for persistent smells, check the P-trap or use enzyme cleaners.
How to clean a smelly drain?
4. Lemon Juice and Baking Soda
To get rid of smelly bathroom drains, first, try the natural baking soda & vinegar method by pouring baking soda, then vinegar down the drain, letting it fizz, then flushing with hot water; if that fails or for deeper issues, use Bunnings products like enzyme cleaners (Drain Clean Bio Active) or gel cleaners (Easy Off) to break down buildup, or try plungers and drain snakes for blockages. Ensure the P-trap has water, especially for floor drains, to block sewer gas.
The best drain deodorizer often starts with natural remedies like baking soda and vinegar, which fizz to break down odor-causing gunk, followed by a flush of hot/boiling water. For stubborn smells or heavier buildup, enzyme-based cleaners, specialized gels (like Liquid Plumber for hair), or powerful, careful-to-use chemical options like Green Gobbler or sodium percarbonate (Oxyclean type) can be more effective, while essential oils offer pleasant scents, say The Spruce, Reimer Home Services, The Kitchn, Reddit users, and Clean Plumber https://www.thespruce.com/how-to-clean-a-stinky-drain-5207454, https://reimerhvac.com/how-to-clean-a-smelly-drain/, https://www.thekitchn.com/10-ways-to-get-rid-of-that-awful-smell-in-your-kitchen-sink-223627, https://www.reddit.com/r/CleaningTips/comments/uz2j65/the_ultimate_product_against_smelly_drains/,.
Using boiling water
Boil the kettle then pour some hot water down the drain. Wait for five minutes then pour an equal amount of cold water down. This should force any remaining grease to congeal and hopefully clear the blockage and the smell.
Maintain clean pipes.
Use white vinegar to maintain clean kitchen and bathroom drains. Periodically, pour a half cup down the drain, let it sit for at least an hour (the longer, the better), and then run water down the drain. Add baking soda to break up clogs.
Pour the bleach slowly around the edges of the drain so that it runs down the sides of the drain. 4 If the odor is coming from a sink with a garbage disposal, turn the disposal on for a few seconds while the bleach is being poured. This will disperse the bleach around the inside of the disposal.
Repeated use of the baking soda-vinegar combination can gradually degrade your pipes, leading to leaks or even burst pipes in severe cases. Additionally, the fizzing action caused by this mixture may be misleading.
Even in cases where the drain isn't obstructed, these odours frequently result from the following factors: 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.
Use a drain cleaner product
To get rid of grease and food debris causing sink stinks in the kitchen, we recommend using Drano® Kitchen Granules Clog Remover. This product has a powerful formula that heats water to quickly melt away grease clogs, helping to eliminate odors in the process.
Sometimes you can clear a clog in metal pipes by simply emptying a kettle of boiling water down the drain, a little at a time. You can pour the water down the drain without removing the shower drain cover. Do not pour boiling water down PVC pipes, which can be damaged by the heat.
Over time, drains can accumulate debris, grease, and other organic matter, producing foul odors. Regularly clean your drains using a mixture of baking soda and vinegar or a cleaning solution recommended by a professional. Flush the drains with hot water to help remove any residual odor-causing substances.
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.
It is not a great drain clog remover. Bleach has no effect in dissolving the common culprits of household drain clogs, like hair, food scraps and grease. Also, pouring bleach can harm the integrity of your drains and pipes. It's a lose-lose scenario.
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.
Baking Soda + Vinegar
To summarize, while not as consistently effective as a plunger for all types of clogs, the baking soda and vinegar approach offers a gentle, chemical-free alternative that works well for certain types of blockages without risking damage to your plumbing system.
However, this can occur when heavy rainfall meets blocked drains, and the drainpipes are unable to handle the volume of rainwater due to an outside drain blockage. That's why households are being encouraged to pour vinegar into their drains to help keep them clear.
Plumbers advise against using chemical drain cleaners because they corrode pipes (especially older metal ones), pose serious health risks (burns, fumes), harm the environment, and are often ineffective on tough clogs, potentially making the problem worse by sitting in the pipe and creating hazardous situations for plumbers who then have to clear it.
4 – Bleach can damage pipes.
Bleach reacts with metal and is very corrosive, with rust or oxidation caused by the trading of electrons between the metal and bleach molecules. Copper pipes can also be damaged making them more prone to plumbing leaks. With PVC pipes, bleach dissolves the sealant used around the pipes.
Hot Water or White Vinegar
To start, bring water or white vinegar to a simmering point (when tiny bubbles appear). Pour half the amount down the drain slowly. After a few minutes, pour in cold water to solidify any remaining gunk, and then add the leftover hot water or vinegar to wash away the rest.
We highly recommend this practice, and often people ask “why pour salt down the drain?” The answer is that salt will break down grease and emulsified fats by itself, and especially when combined with vinegar and hot water it can contribute to clearer pipes.
Items to Never Flush or Pour Down the Drain:
They include the following: