Yes, ants are strongly attracted to sugar, and most species actively prefer it over other food sources. Many ants will choose sugar over protein, fat, or amino acids when given the option. This preference isn’t random. Sugar is a dense, efficient energy source that fuels the constant movement and colony maintenance that define ant life.
Why Sugar Draws Ants So Effectively
Ants have evolved alongside sugar-rich food sources for millions of years. In the wild, many species feed on honeydew (a sweet liquid excreted by aphids and other plant-sucking insects), flower nectar, and ripe fruit. These natural foods are loaded with sucrose, fructose, and glucose, the same sugars found in your kitchen. Ants don’t just tolerate sugar; research on their taste biology shows that preference for sucrose, the main sugar in nectar and honeydew, is conserved across species. That means the attraction runs deep in ant evolution, not just in the handful of species that invade homes.
When researchers test ants against a range of sugars, sucrose consistently wins. In lab studies on the odorous house ant, one of the most common indoor species in North America, sucrose solution at roughly 20% concentration was consumed significantly more than fructose, glucose, trehalose, or maltose. Fructose and glucose came in second and third. At concentrations above 20%, consumption leveled off or even declined, suggesting ants have a sweet spot (literally) for how concentrated they like their sugar water.
Not All Ants Are Sugar Seekers
While sugar attraction is widespread, ant diets are surprisingly diverse. Army ants are mass-raiding predators that hunt other insects. Some specialist species target only spider eggs, springtails, or termites. Fungus-growing ants, like leafcutters, farm their own food by cultivating fungal gardens on chewed plant material. Granivore ants prefer seeds rich in amino acids and fatty acids over sugary foods.
Even among sugar-loving species, protein still matters. Many ants prefer a combination of sugar and amino acids over sugar alone. Colonies adjust what they forage based on what the colony needs at any given time: more protein during brood-rearing season, more carbohydrates when workers need fuel. So the trail of ants heading for your honey jar today might shift to the cat food bowl tomorrow.
How Ants Find Sugar in Your Home
A single scout ant wandering across your counter is doing exactly what its role demands: searching semi-randomly for food. Once that scout detects a sugar source, it secretes a chemical trail of pheromones on its path back to the nest. Other foragers follow that scent trail directly to the food. This is why you can go from spotting one ant to seeing a highway of them in what feels like minutes.
The pheromone system is surprisingly sophisticated. Returning ants actually adjust how much pheromone they deposit based on the distance to the food source. A sugar spill far from the nest triggers a stronger chemical trail so other ants can follow it reliably over a longer distance. A nearby source gets a lighter trail. Forager ants wander more randomly while searching, but returners move in straight, efficient lines back to the nest, reinforcing the trail with each trip.
The “Sugar Ant” in Your Kitchen
When people say “sugar ant,” they’re usually talking about the odorous house ant (so named because it smells like rotten coconut when crushed). This species is one of the most common household invaders in temperate North America, and its fondness for sugar is exactly how it earned its nickname. In homes, odorous house ants feed on fruit juice, pastries, dairy products, and pet food. They show invasive-like behavior in urban settings, forming large colonies that can be difficult to eliminate.
Argentine ants are another major sugar-seeking species. Originally from South America, they’ve spread to every continent except Antarctica and are especially common in the southern and western United States. Their colonies can contain millions of workers, and they’re relentless in exploiting any accessible sugar source.
Do Ants Like Artificial Sweeteners?
Ants will investigate artificial sweeteners, but the relationship is more complicated than with real sugar. Some sugar substitutes are actually toxic to ants. In controlled tests on red imported fire ants, individuals fed erythritol, aspartame, or saccharin had mortality rates above 80%. Erythritol was particularly notable because it kills slowly, giving foraging ants time to carry the substance back to the colony and share it before dying. Researchers have explored using sweetener-based baits as an environmentally friendly alternative to traditional insecticides for fire ant control.
So while ants may be initially attracted to the taste of some artificial sweeteners, the outcome is very different from what happens when they find real sugar. If you’ve noticed ants avoiding a diet soda spill but swarming a regular one, this could be part of why.
Using Sugar Attraction for Ant Control
The very thing that draws ants into your home can be turned against them. Liquid sugar baits exploit the foraging and sharing behavior that makes ant colonies so efficient. The principle is simple: mix a slow-acting toxicant into a sugar solution attractive enough that ants carry it back to feed the rest of the colony, including the queen.
Research from the University of California, Riverside found that a 25% sucrose water solution is the most preferred bait concentration across multiple studies. For Argentine ants, combining this with a very low concentration of boric acid (0.5% to 1%) created a bait that achieved roughly 80% reduction in ant numbers in field trials. The key is keeping the toxicant concentration low enough that ants don’t die before making it back to the nest. Higher concentrations kill individual workers quickly but never reach the queen, so the colony rebounds. In that UC Riverside field study, the 80% reduction took nine weeks of continuous baiting, which underscores that effective ant control through sugar baits requires patience.
Commercially available liquid ant baits work on this same principle. Place them along the trails you’ve seen ants using, resist the urge to kill the ants you see (they’re your delivery system), and give the bait time to circulate through the colony. Cleaning up competing sugar sources in your kitchen makes the bait the most attractive option available.