How To Get Rid Of Ants In Bathroom Drain: A Complete Guide

Ants have been known to create a nuisance anywhere they are found, even though they are beneficial to the ecosystem. There are more than 12000 ant species that have been known to exist (click here to see the most common ones). These tiny creatures are quite strong, considering their bodies do not measure up to even a full centimeter.

They live in large colonies and have a queen, just like the bees among other insects. They are quite social, hence this is why they often divide themselves into groups.

How to get rid of ants in bathroom drain? Some effective ways to eliminate ants in bathroom drains are locating and sealing ants’ entry points, keeping the shower dry, utilizing ant baits, dehumidification, and insecticides. These methods are effective for every type of ants that are likely to invade your bathroom drains, such as argentine ants and carpenter ants.

Ant Exterminators

Ants can penetrate through the hardest places like the drains just to search for food. One would wonder why they would suddenly appear in the bathroom? Well, this happens because they are continually searching for moisture and any food debris.

Before calling the pest experts, consider using our following tips methods to get rid of ants permanently in the bathroom drains. Let’s begin!

Effective Ways to Get Rid of Ants in Bathroom Drain

Locate and Seal Ants’ Entry Point

Effective Ways to Get Rid of Ants in Bathroom Drain

Ants can get into the house through any opening. So you should find out the entry point of these unwanted insects. Start by observing their behavior, and you might trace it back to a nearby garden.

They can crawl through any crevice or hole in the house, especially around the bathroom area. Once you find their entry points, seal them immediately. The bathroom may not be their only entry point.

So take time to find all the entry points of ants and seal all of them with caulk. This will bar them from moving further.

Keep the Shower Dry

Keep the Shower Dry to prevent ants

If you have a bathtub, then the wood behind it needs to stay dry all the time. Whenever there’s a leak, it in the bathtub, the water penetrates the wood and makes its dump. As it continues to seep through, it gets the wood studs wet, creating a dump environment.

This kind of situation attracts the ants, and they will find a way to come through. The warmth of the shower will attract them as well. Don’t leave this unattended to, or let the water spill on the floor.

Clean up after taking a shower, the same must be applied to the other members of the family. Let the shower get dry and allow the ventilation through the bathroom. In short, to get rid of these annoying creatures, seal the cracks, and make sure the shower is very dry.


Dehumidification involves getting rid of atmospheric moisture. Ants thrive on moist areas to build their structures. The steam in the bathroom should not cloud the area because it attracts the ants.

Clean the bathroom floor every time you leave it. When you clear the stagnant water, you will prevent ants infestation. In cases where there are kids involved, make sure to clean the bathroom after they use it since they can splash the water everywhere. If the bathroom is clean and dry, the ants will avoid it and will not come through the sink.

During the process of dehumidification, leakages should be taken care of. Any dripping pipes or water leakages should be fixed by a plumber. Ants also like to make a home from the clogs such as human hair and other dirt.

Check them before you witness an ant infestation. The bathroom drain, on the other hand, should be unclogged as much as possible. Clean it regularly to avoid ants’ invasion incidences from reoccurring.

Use of Insecticides

Use of Insecticides for Ant Control

Insecticides have always been known to clear insect infestation. Companies have perfected and researched better chemicals and treatment methods of getting rid of ants.

There are a number of insecticides that work effectively when used in accordance with professional advice. Acquire an ant insecticide spray to carefully spray on corners and the moist areas in the bathroom to prevent them from coming through the drain.

The drain clogs solution products are also locally available to ease the stress. Your bathroom should drain with ease. After using chemicals, avoid touching or handling any food before thoroughly cleaning yourself and any surfaces that got in contact with the chemicals. Insecticides could pose a danger to either you or your family. So be careful when using them, particularly when kids are around.

Ant Baits

Ant baits are one of the most effective methods of eradicating ants from your bathroom drain. The following ant baits have proven to work amazingly:

Syngenta - TRTD11568 - Optigard Ant Bait Gel Box - 4 Tubes w/ Plunger - 30g each tube
  • Target pests: For indoor and outdoor control of...
  • Highly attractive formula promotes ready transfer of the active...
  • Powerful, active ingredient knocks out workers, brood and queens
  • Approved for use indoors and outdoors, applied in cracks and...
  • How does Optigard Ant Bait Gel work? Ants that feed on the gel...
Homeplus™ Ant Killer AB , Metal Ant Bait, Ants Killer for House, Ant Traps Indoor & Outdoor, 4 Pack
  • Metal Ant Killer Bait: Attracts and kills many different species...
  • Food Lure Ant Bait: The child-resistant metal bait stations use 4...
  • How it Works: Worker ants carry and share the bait with the rest...
  • Quick Results: Starts killing worker ants within 24 hours; you...
  • Usage: Homeplus Ant Killer AB baits are great for getting rid of...

Home Remedies for Getting Rid of the Ants in the Bathroom Drain

You shouldn’t wait for a pest control company to handle the ants, because you can use some home remedies to get rid of them. They have been known to be effective, many people can attest to that.

One of the home-based solutions is utilizing baking soda together with vinegar. Sprinkle the baking soda down the drain and then follow it with equal quantities of vinegar. Due to the acidity of the vinegar, it will require more ventilation for this procedure.

Open all your windows as well as doors if it is necessary. The mixture will form a bubbling reaction that will kill all the ants in your drain. After completing this step, flash the dead ants and rinse the remains of the baking soda with hot water.

The other adequate remedy is a mixture of soap and water in a spray bottle. This mix kills ants very quickly.

Another ant killer is boiled water. Use your kettle to boil water and pour it in the bathroom drain to kill ants. It’s a fast method that works effectively too. Since it was very hot, be careful not to burn yourself when you use this method. Keep the bathroom clean and continue to unclog the drains. These home remedies will definitely keep ants away.

Can I use salt to eradicate ants? Salt is regarded as a natural killer of insects including ants. In order to make salt effective in killing ants, mix it with hot water and allow the mixture to cool. Then pour or spray it on ants and they will die.

How can I repel ants with smells? Ants hate strong smells. Thus, cinnamon is among the natural repellants of ants. To achieve effective results, mix cinnamon powder with some essential oil. The mix will produce a strong smell that will keep ants away.

Identify Ant Food Sources

Identify Ant Food Sources

Since ants are in constant search for food, make sure to keep all your food safe and sealed if possible. Do not continue to feed ants. The bathroom drain should be free of any juice or coffee because these residues will attract ants.

Pay attention to the sugary foods and clean up any spills around the bathroom and in the kitchen. Food handling should be done carefully not to attract insects. If the foods are sealed in airtight containers, ants cannot access them. Thus, you can prevent ant infestation by keeping your food away from them.

Related: What Do Ants Eat? | Ant Feeding Habits


Once you identify a trail of ants, deal with it immediately. Borax and diatomaceous earth have been known to eliminate ants when used correctly. So after sprinkling these substances, vacuum any ant hideouts.

Follow the trails to vacuum all the ants and seal the entry. Once you are done with vacuuming, the vacuum cleaner should be cleaned. This way, you will prevent insects attached in the cleaner from getting back to the house. Ants should be dead as you dispose of them. Thoroughly clean up the ant trails with soapy water or a vinegar mixture.

Natural Ant Spray

If you are facing severe ant infestations, you can get rid of them quickly and efficiently by using natural ant sprays. Mix peppermint oil with some tree oil together with cayenne pepper in a bottle. This mixture in a spray bottle should be used to spray bathroom floor corners and other dump areas surrounding the bathroom.

Once ants get into contact with the bait solution, they die instantly. After this, make sure to clean the bathroom thoroughly and clean the dead ants. The residue should also be washed off to leave the bathroom sparkling clean. Since ants like to move around, you can place these bait traps on their pathways.

The Garbage

Home Remedies for Getting Rid of the Ants in the Bathroom Drain.

Keep a close eye on the garbage. Always, remember to seal the garbage bag and regularly clean the trashcan. Not only will this prevent the foul smell, but it also prevents ants’ infestation. Garbage should be taken out regularly, if possible, daily. 

Cleaning your garbage makes sure you are not leaving out any residues that might attract ants. Clean the area around your garbage dumping point because the leftovers or spills you may fail to see would still attract ants.


Ants’ infestation can be a nightmare, especially around your bathroom. It is annoying since these insects can interrupt your normal daily activities. If ants are left unattended, they can damage the foundation of the home. Once the foundation is spoilt, your home will be ruined as well.

Ants are surprisingly tiny, yet strong insects that shouldn’t be left overlooked. Once the ants start trailing in your house, don’t waste any more time. Use the above methods and equip yourself with more knowledge on how to control them. To prevent future infestations, your bathroom should always be clean and stay dry when not in use.

Keep your family free from danger by keeping off these tiny creatures. Once you are done with this tedious and stressful process, pat yourself on the back because you have won the war against ants. Ants can be controlled, and you will reclaim your bathroom if you follow our guide. Best of luck!

List of Sources

Integrated Pest Management: Ants, California Childcare Health Program, University of California

When Ants Invade, Texas A&M AgriLife Research and Extension Center

Know Your Ants, Wisconsin Department of Natural Resources

Tschinkel, W. R., & King, J. R. (2007), Targeted removal of ant colonies in ecological experiments, using hot water, Journal of Insect Science

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