“Sugar ants” isn’t a single species in Florida. It’s a catch-all term residents use for the tiny, sweet-loving ants that show up on kitchen counters, around sinks, and near pet bowls. The ant you’re almost certainly dealing with is the ghost ant, the most common household sugar ant in South Florida. White-footed ants and pharaoh ants round out the top three. Identifying which one you have matters because it changes what actually works to get rid of them.
Ghost Ants: Florida’s Most Common Sugar Ant
Ghost ants are the species most Floridians mean when they say “sugar ants.” Workers are tiny, only about 1.3 to 1.5 mm long, which is smaller than a sesame seed. Their head and upper body are dark brown, but their legs and lower abdomen are milky white, almost translucent. That pale coloring, combined with their size, makes them genuinely hard to see on light countertops. They don’t sting or bite in any meaningful way.
These ants are extremely adaptable nesters. Outside, they set up in flowerpots, under loose bark, at the bases of palm fronds, in leaf litter, and under anything sitting on the ground. Inside, they squeeze into wall voids, cracks in baseboards, spaces between cabinetry and walls, gaps between stacked books, and potted plants. Entomologists describe them as “opportunistic nesters” that sometimes occupy a site for only a few days or weeks before relocating. That mobility is a big part of why they’re so frustrating to deal with.
Ghost ants love sweet liquids. In nature, they feed on honeydew produced by aphids and scale insects on landscape plants. Indoors, they’re drawn to sugar, syrup, juice spills, and fruit. They’ll also eat dead insects and grease when sweets aren’t available.
White-Footed Ants and Pharaoh Ants
White-footed ants are the other big sugar ant problem in Florida, especially in South and Central Florida. They’re slightly larger than ghost ants, about 2.5 to 3 mm, and uniformly black to brownish-black with pale yellowish-white feet. If you see long, steady trails of small dark ants running along the outside of your house, up walls, or through trees, white-footed ants are a strong possibility. They don’t bite or sting, and they don’t cause structural damage.
White-footed ant colonies can be enormous. Population estimates range from 8,000 to 3 million individuals. They nest primarily outdoors in trees, bushes, under palm fronds, in rain gutters clogged with leaves, in loose mulch, and in wall voids or attics. Their foraging trails can stay active along the same route for months. Like ghost ants, they’re attracted to honeydew and sweet foods.
Pharaoh ants are a third possibility. They’re similarly tiny and yellowish to light brown. They’re more common inside large buildings like apartments, hospitals, and condos, and they’re especially drawn to both sweets and proteins. If you’re in a single-family home surrounded by landscaping, ghost ants or white-footed ants are the more likely culprit.
Why Spraying Makes Things Worse
This is the single most important thing to understand about Florida sugar ants: spraying them with a can of Raid or any repellent insecticide will usually make your problem bigger, not smaller.
Ghost ants and white-footed ants both reproduce through a process called budding. Their colonies contain multiple queens spread across multiple nesting sites. When workers detect a chemical threat, a queen and a group of workers split off and establish a new nest somewhere else. You spray the kitchen counter, and now instead of one colony you have two, possibly in different rooms. The ants you see are just foragers. Killing them with contact spray does nothing to the queens producing thousands more back in the wall void or the planter outside your window.
This is why so many Florida homeowners feel like they’ve “tried everything” and the ants keep coming back. Repellent sprays create a cycle: spray, temporary relief, budding, reinfestation, repeat.
What Actually Works: Baiting
The effective strategy is baiting, not spraying. Baits use slow-acting ingredients that let forager ants carry poisoned food back to the nest, where it gets shared with queens and the rest of the colony. This process takes days to weeks, but it targets the colony itself rather than just the workers you can see.
For sugar ants, sweet liquid or gel baits work best because they mimic the sugary foods these ants already prefer. You can buy commercial gel baits at hardware stores, or make a simple version at home by mixing a small amount of borax into sugar water and setting it out in bottle caps along ant trails. The key is using a very low concentration of borax so the ants survive long enough to bring it back to the nest.
Common active ingredients in commercial ant baits include borax, fipronil, indoxacarb, and hydramethylnon. All work on a delayed-kill principle. Place baits directly along the trails you see ants using, and resist the urge to spray anything nearby. You want the ants to find the bait and recruit their nestmates to it. If you spray a repellent near the bait, the ants will avoid the entire area.
Expect to see increased ant activity around the bait for the first day or two. That’s a good sign: it means the colony is feeding on it heavily. Over the following one to two weeks, trail activity should drop noticeably. For large infestations, especially with white-footed ants and their massive colonies, you may need to refresh baits and be patient for several weeks.
Preventing Sugar Ants From Coming Back
Florida’s warm, humid climate means sugar ants are a year-round pressure, not a seasonal nuisance. Prevention is about reducing what draws them inside and closing the gaps they use to get there.
Start with moisture. Sugar ants in Florida are consistently attracted to moisture sources. Fix dripping faucets, repair leaky pipes under sinks, and address any condensation issues around AC units or windows. Damp wood, even minor water damage around a windowsill, can become a nesting site.
Seal entry points around windows, doors, and where plumbing or wiring enters walls. Ghost ants are small enough to fit through cracks you might not even notice, so caulking gaps along baseboards and around cabinet edges makes a real difference indoors. Outside, keep mulch, leaf litter, and yard debris pulled back from your home’s foundation. Palm fronds, potted plants, and landscape timbers stacked against the house are all common nesting spots that give ants a direct bridge inside.
Clean up food sources consistently. Wipe down counters after cooking, store sugar and honey in sealed containers, rinse out soda cans before recycling, and don’t leave pet food bowls sitting out overnight. Even a thin film of juice residue on a counter is enough to establish a trail.
If you have ornamental plants with aphid or scale insect problems near your home, those insects produce the honeydew that sugar ants feed on outdoors. Managing those plant pests can reduce ant pressure on the exterior of your house, which in turn reduces the number of foragers finding their way inside.
When Baiting Alone Isn’t Enough
Ghost ant colonies are polydomous, meaning a single colony spreads across many nesting sites, sometimes both inside and outside your home simultaneously. If you’ve been baiting consistently for several weeks and still see heavy trail activity, the colony may be larger or more spread out than a few bait stations can handle. White-footed ant colonies in the millions are genuinely difficult to manage with over-the-counter baits alone.
A licensed pest control operator familiar with Florida’s ant species can apply non-repellent liquid treatments to the exterior perimeter of your home. Unlike the repellent sprays that cause budding, non-repellent products are undetectable to ants. Workers walk through the treated zone, pick up the active ingredient, and transfer it to nestmates through normal contact. Combined with interior baiting, this approach addresses both the indoor foragers and the outdoor source colonies feeding them.