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Why Are There Ants in My Bathroom and How to Get Rid of Them?

Written by Aptive Pest Control
Updated: June 2, 2026 Published: November 22, 2024

Finding ants in bathrooms or showers is a common problem, especially in warm or humid areas of the home. Ants are typically attracted to bathrooms because of moisture, standing water, soap residue, and easy access through gaps around plumbing or drains. Whether you’re seeing tiny ants in bathroom sinks, ants coming from shower drains, or trails near the shower, identifying the source of the activity is the first step toward getting rid of ants and preventing future infestations.

Why are there ants in my bathroom or shower?

Ants enter bathrooms primarily because of moisture, food residue from personal care products, and easy access through gaps in plumbing and baseboards. Understanding these three drivers helps you address the root cause of ants in the bathroom and how to prevent them. 

1. Moisture

Ants need water to survive, and bathrooms are rarely dry. Leaky faucets, pooling water in the shower, condensation on tiles, and poorly ventilated spaces all create the damp conditions ants seek out. A bathroom that stays consistently damp with poor ventilation can also attract colonies looking for a nesting site close to that supply.

2. Food sources

Bathrooms offer more than just water. Residue from soaps, shampoos, and body washes can contain oils and organic compounds that certain ant species detect from several meters away. Hair, skin cells, and organic buildup around drains are additional attractants. It may not look like a food source, but to an ant, it is.

3. Entry points

Ants rarely travel far to find a way in. Gaps around plumbing, unsealed tiles, cracks near baseboards, and poorly fitted window frames all serve as access points. Pipe runs connected to the outside or to other areas of your home are a particularly common route, giving ants a direct path from the ground into your walls and up into the bathroom.

Which types of ants are commonly found in bathrooms?  

Odorous ants (the most common sugar ants in bathroom species) are small, dark brown, and release a rotten-coconut smell when crushed. Carpenter ants and pavement ants are other tiny ants in bathroom areas that scout from an outdoor colony. All species are drawn by moisture, with odorous ants being the most likely culprit when there are ants coming from shower drains or you spot trails under the sink. 

How to get rid of ants in the bathroom and shower

To get rid of ants in the bathroom and shower, reduce moisture, clean organic residue from surfaces and drains, and seal entry points around plumbing and baseboards. Here's how to do each: 

1. Reduce moisture 

Fix any leaking faucets, pipes, or showerheads, and improve ventilation to lower humidity. A dehumidifier can help in bathrooms that tend to stay damp. After each use, wipe down the shower, sink, and countertops to remove standing water. Eliminating that moisture source takes away one of the main reasons ants are coming in.

2. Clean regularly 

Soap scum, hair, and organic residue around drains give bathroom ants a reason to keep returning. Clean these areas thoroughly and consistently, paying attention to shower corners, drain covers, and the undersides of product bottles left on surfaces. Avoid leaving damp towels or bath mats on the floor for long periods; they hold both moisture and the organic material ants are looking for.

3. Seal entry points

Check for cracks and gaps around windows, baseboards, and plumbing entry points, then seal them with caulk. Expanding foam works well for larger gaps around pipe runs, closing off the routes ants use to travel between walls and your bathroom. Even small openings around the bathroom sink plumbing are worth sealing – black ants in the bathroom often follow pipe lines from nests located elsewhere in the structure.

When to call a professional for ants in the bathroom

Dealing with ants in the shower or bathroom can be frustrating. While over-the-counter products may help reduce pests, a full-blown ant infestation may require professional treatment. Aptive Pest Control experts are here to help. We know how annoying ants in bathrooms can be, and our team is ready to solve the problem. From identifying moisture issues to sealing off entry points, we’ll make sure your bathroom stays protected from ants so you can relax and enjoy your home.

Contact us now and get a complimentary quote for ant control today!

Ants in bathroom FAQs

Q: Why are there tiny ants in my bathroom?

Tiny ants in the bathroom are most often odorous ants or sugar ants, drawn by moisture and trace residues from personal care products. They tend to show up near drains, around the bathroom sink, or along baseboards close to plumbing. Keeping surfaces dry, cleaning drains regularly, and sealing gaps around pipes can help deter activity. If trails keep returning, an ant colony may be nesting inside a nearby wall void.

Q: How do I get rid of ants in the bathroom?

Start by addressing moisture: fix leaks, improve ventilation, and wipe down surfaces after use. Clean drains, shower corners, and sink areas regularly to remove the organic buildup that attracts bathroom ants. Seal cracks around plumbing, baseboards, and windows with caulk or expanding foam. For small numbers of ants, these steps may be enough to limit activity. Persistent infestations may need professional treatment to locate and address the source colony.

Q: What does it mean when you have ants in the shower or bathroom?  

Ants in the bathroom usually signal a nearby moisture source or a colony nesting inside a wall void close to plumbing. It doesn't necessarily mean there's a food problem – bathrooms attract ants through water and organic residue alone, even in clean homes. 

Q: Why are ants coming out of my bathroom drain?

Ants coming from shower drains or bathroom sinks are usually attracted to organic buildup inside the pipe, not the drain itself. They can also use drain lines as a travel route from nests located in walls or a crawl space nearby. Cleaning drains regularly with hot water helps reduce that buildup. If ants continue to appear from the drain, the colony is likely established close by and may need professional attention to address.

Learn more about ants

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