The odorous house ant is a small ant commonly found in homes across the United States. These ants get their name because they produce a strong coconut smell when crushed, which is why they’re sometimes referred to as ‘coconut ants’.
Odorous house ants are small, dark brown or black ants that are usually about one-eighth of an inch long and move quickly in long, uneven trails. These ants are common in homes and businesses, especially during warmer months or after heavy rain, when outdoor colonies get disturbed.
Unlike most other ant species, odorous house ants have a node on their pedicel that is hidden under the abdomen. They may look like a solid color all the way through.
Odorous ants also tend to move in long trails, often leading to food or water sources, which is why you’ll spot them along baseboards, under sinks, or near any food that’s been left out.
Like other ants, odorous house ants live in colonies made up of queens, workers, and developing ants. A single colony can include multiple queens, which allows the population to grow quickly and makes infestations harder to control.
Eggs laid by the queen hatch into larvae, which then develop into pupae before becoming adult ants. Workers care for the young, forage for food, and defend the nest. Under the right conditions, this cycle can move fast, meaning a small number of ants can turn into a big problem in about 34-38 days.
Odorous house ants typically live for several years, and their colonies can range in size from 10 to 10,000.
Odorous house ants are more active in spring and summer, especially after rain, when their natural nests may flood. That’s usually when they start moving indoors to find dry, warm places with food and shelter.
But they don’t disappear when the seasons change. In winter, they often stay hidden. They can stay active all year if they’ve already found a nesting spot inside, such as behind walls or under flooring. That’s why you may still see them in colder months, especially in kitchens, bathrooms, or near heating systems.
Odorous house ants thrive in both indoor and outdoor spaces. They’re adaptable and quick to take advantage of available food, moisture, and shelter.
Outdoors, these ants build shallow nests under rocks, logs, mulch, or within soil near buildings. They’re especially drawn to damp spots and shaded areas. They often head inside if their outdoor nests are disturbed by rain or yard work.
Indoors, they like warm, hidden spaces like wall voids, behind cabinets, under floors, or near water heaters and plumbing. Once inside, they tend to stick close to places that provide regular access to food or moisture, like kitchens and utility rooms. These ants are attracted to moisture, and in hot, dry environments, nests can be found in house plants and even toilet lids.
Odorous house ants love sweet substances, but they’ll also eat greasy foods and proteins if that’s what’s available. In nature, they often feed on honeydew, a sugary substance made by plant-sucking insects like aphids.
Inside homes and businesses, they forage for anything easy to reach, eating most household foods, especially sugary sweets, fruits such as melon, and even pet food. A few crumbs left out or a sticky spot on the counter can attract them. Once they find food, they leave a scent trail behind to help other ants follow the path.
Odorous house ants are difficult to control without professional pest control. You might kill the ants you see, but if the queens and hidden nests are still active, the problem will come back. However, there are some measures you can take to help prevent an infestation in the first place.
Keeping your space clean and sealed may help reduce your chances of attracting these ants. Clean up food spills quickly, store everything in airtight containers, don’t leave dirty dishes out, and wipe down counters regularly.
It also helps to fix any leaks, especially in kitchens, bathrooms, and utility areas. Damp spots and standing water attract ants just as much as food. Also, check for cracks around windows, doors, pipes, and baseboards. Even small gaps can become easy entry points for these particular ants and other pests.
Outside, keep mulch, firewood, and plants away from your foundation. These spots make ideal nesting sites and can serve as a bridge for ants entering your building.
Whether you’re dealing with odorous house ants, ghost ants, pavement ants, Roger's ants, and more, we’re here to help. Our trained technicians don’t just treat where ants are seen; they find and target the nests. We use proven methods like ant bait, pest control dust, and changes to the surrounding area to help keep ants away.
They can be difficult to eliminate without professional help. Odorous ants form huge colonies with multiple queens, which means without expert treatment, the infestation may continue or even spread to new areas.
Odorous house ants are mostly drawn to sweet foods, but they’ll also go after grease, crumbs, and even water. Leaky pipes, food spills, and unsealed pantry items are all big attractants. They’re also more likely to appear indoors after heavy rain or changes to their outdoor environment.
Not exactly. “Sugar ant” is a general term people use for ants attracted to sweet things. Odorous house ants often fall into that category, but they’re a specific species with their own habits and behaviors.
No, odorous house ants don’t bite or sting; they’re more of a nuisance than a threat. While these pests don’t pose a physical danger, their presence in kitchens or food areas can lead to food contamination and hygiene concerns.