7 Best Ant Control Services in Singapore (October 2026)

Ants look like the easy pest. They rarely bite, they don't spread dengue, and a spray kills every one you can see. That's the trap. The ants on your counter are foragers from a colony living in a wall gap, a cabinet or a socket, and killing them does nothing to the queens behind the tiles.

The ants Singapore homes actually get.

• Ghost ants. About 1.3 to 1.5mm, with a dark head and an almost see-through body. They like sugar and damp (kitchen cabinets, under the sink, behind the fridge) and spread many queens across several nests.
• Pharaoh ants. About 2mm, golden to yellow-brown, keen on grease and protein. The hardest common indoor ant to clear.
• Crazy ants. Long legs, black or dark red, and they scatter in every direction when disturbed.
• The Singapore ant. Small, light brown, darker at the rear. Pest trade guides describe it nesting in plug sockets and electrical items, and it's often mistaken for the pharaoh ant.
• Carpenter ants and fire ants. Carpenter ants are much bigger and tunnel into damp wood, leaving sawdust. Fire ants nest in soil outdoors and sting. Winged ants are easy to mistake for flying termites, so if you're finding wings by a window, read my termite control guide too.

Where to look. Kitchen cabinets, under the sink, the bathroom, sockets near the counter and skirting along shared walls. Ghost and pharaoh ants travel along the wiring inside walls, so a socket is often where people first see them.

Why spraying a trail can make it worse. Pharaoh and ghost ants keep many queens. Hit the colony with a repellent spray and workers carry brood off with a queen to start new nests, which pest controllers call budding. Rentokil, Killem, Protect Pest Control and PestBusters all warn about it. One trail becomes three, in three rooms.

Why slow bait works better. Ant bait is food laced with a slow, non-repellent insecticide. The ant eats it, walks home and shares it with the brood and the queens. Kill the queens and the colony stops. So a good technician lays small dots of bait on the trail and then asks you to leave the ants alone.

Gel or granular? Gel goes indoors: cracks, cabinet hinges, socket edges, skirting boards. Granular bait, scattered or in stations, goes outdoors in garden beds and along walls, and suits fire ants and crazy ants. Ghost ants lean sweet and pharaoh ants lean greasy, so a careful technician may use two baits.

Landed homes need a perimeter. In a terrace or semi-D the colony often lives outside, in soil, planters or a tree touching the wall, so the job adds a residual spray along perimeter walls, manholes and floor traps. In an HDB flat ants more often come in through wall gaps, pipe openings and sockets, sometimes from next door.

These are typical ranges from the prices companies publish and from published price guides, checked in October 2026. Where a company on this list publishes its own number, it's in the last column. The final price follows an inspection, and a heavy pharaoh ant problem sits at the top of each band.

If you're looking to hire someone for ant treatment in Singapore, these are the checks I'd run, roughly in this order.

1. NEA registration. The Control of Vectors and Pesticides Act treats any insect capable of carrying or causing disease as a vector, and NEA's vector control operator page says only NEA-registered operators, with licensed or certified technicians, can be engaged for vector control work. The page also links a downloadable list of registered companies.
2. Species before treatment. The company should tell you which ant you have before it treats. If the plan for pharaoh ants is the same spray it would use on cockroaches, keep looking.
3. Bait indoors, spray outdoors. For ants inside a flat I want gel bait on the trails and in the cracks. Residual spray belongs on the perimeter, in drains and at outside entry points.
4. A service report and registered products. NEA expects operators to leave a comprehensive service report with recommendations, and any pesticide used for vector control must be registered and carry the NEA Registration Mark. Ask for both.
5. Prevention in the plan. NEA's page on integrated pest management sets out Singapore Standard SS 721:2025, which puts prevention first and pesticides last. It doesn't name ants, but the logic fits: sealing a wall gap or fixing a leak under the sink beats another round of spray.
6. A re-treat promise and real review numbers. Colonies with several nests sometimes need a second visit, so I want that written into the quote. And I trust a 4.7 across a few hundred Google reviews more than a 5.0 across ten.

I started from the companies that come up for ant pest control in Singapore and read each one's ant page, not its homepage. Plenty of firms list "ants" between "bed bugs" and "booklice" and say nothing more. Companies whose ant page was thin, written around another country's species, or wouldn't load didn't make it.

I checked each Google rating and review count on Google Maps in October 2026, read published prices where they exist, and noted recent changes like Killem joining Rentokil Initial. Three of these companies also appear in my main pest control guide; the other four are here for their ant work. Ratings and prices move, so get your own quote.

Ant pest control in Singapore costs about S$80 to S$200 for a one-off treatment in an HDB flat, going by published prices. Protect Pest Control lists S$140 for an HDB flat and S$150 for a condo, and Pestopia starts from S$80. Landed homes run about S$150 to S$250.

A bi-monthly annual plan for a flat is around S$520. That makes sense when the ants come from somewhere you can't fix, like a neighbour's unit or a garden full of soil nests.

Tiny ants in a Singapore home are usually ghost ants or pharaoh ants, both around 1.5 to 2mm. Ghost ants have pale bodies and dark heads; pharaoh ants are golden. Both nest inside walls, cabinets and sockets and come out for food and water, so you see the foragers and never the nest.

Leaks under the sink, sweet spills, pet food and gaps around pipes pull them in, and in a flat they can come through shared walls from next door. That's why a spotless kitchen can still have a trail.

No. Don't spray ants before the technician arrives. Repellent spray can make pharaoh and ghost ant colonies split into new nests, and it wipes out the trails the technician follows home. Origin Exterminators asks clients not to disturb the ants before a visit, and not to use their own sprays on treated areas afterwards.

What you can do: seal food away, wipe up spills, fix any drip under the sink and photograph where the trails run. Then leave the trail alone, and after treatment don't wipe off the bait dots.

An ant treatment visit in Singapore usually takes a few hours or less, and most homes need one or two sessions. With slow-acting bait you'll still see ants feeding for the first few days. Activity normally drops over the next week or two; a multi-nest pharaoh ant colony may need a follow-up visit.

If the trail looks exactly the same after two weeks, call the company back. That's what a re-treat promise is for, and it often means there's a second nest the first round didn't reach.

Yes. The National Environment Agency says only companies registered with it as vector control operators can be engaged for vector control work, and their technicians must hold NEA licences or certificates. NEA posts a downloadable list of registered operators on its vector control operator page, so you can check a company before booking.

Ask to see the technician's licence when they arrive too. Every company on this list says its technicians are NEA licensed or certified.