How to Clean a Smelly Tub or Sink Drain

No matter if it's your kitchen sink or bathtub drain, if there's smells coming from the drain like rotten eggs, mildew, or sulfur, you should disinfect and clean your drain. These smells can be caused by contamination, overpopulated bacteria in your sink, or accumulated residue. Thus, ways that will get rid of the grime should in theory, take care of the smell.

However, there is also the possibility that the smell is from your water. Take a glass of water from the
drain and sniff it at a different room. If the water has an unpleasant odor, it means that the bacteria is in the water.

Before sanitizing the drain, make sure to remove obstructions such as built up hair that often adds to the problem by slowing water drainage.  Using a simple, plastic hair snake from the hardware store that costs just a few dollars usually does the trick.
  1. The first step to clean your drain is to pour hot water down the drain.
    Boil about half to one gallon of water, then leave it to cool for 5 minutes because pouring boiling water down your drain can cause damage to your piping. After you have poured the hot water into the drain, leave it for 5 minutes before turning on cold water to solidify any remaining grease.
  2. Next, deodorize and sanitize your drain with chemicals of your choice. There are many different disinfecting agents you can use.  A few are: baking soda and vinegar, hydrogen peroxide, and bleach. If you are using baking soda, you should pour between half to one cup of baking soda down the drain, then follow up with a cup of hydrogen peroxide or 4 cups of heated white vinegar 10 minutes after. This should really sanitize your drain. While you’re at it, you can also disinfect your tub/sink surface with the baking soda liquid paste.You can also use bleach to do the job. Just pour half a cup of bleach to kill off the bacteria colonies in your drain.
  3. Replacing your piping and hardware is also an option, especially if you have tried both methods and the smell is still lingering in your drain.
Cleaning your drain should be your first step to eliminating a smelly drain. However, if the odor persists, you should always call a professional plumber to diagnose the source of the smell.

Call 800-368-7767 or visit www.elahomerepairs.org for a free referral to a licensed, bonded, and insured plumber.

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