Use professional gel baits
Gel bait combines a food attractant with a slow-acting insecticide. Worker ants feed on it, return to the nest, and share it with the queens and larvae. The slow action is the point: a bait that killed instantly would never make it back to the colony.
How to place ant bait correctly:
1. Place small, pea-sized dots along active trails and near entry points, not directly on top of the ants.
2. Target the routes ants use behind kitchen appliances, along skirting boards, under sinks, around window frames, and near electrical sockets.
3. Leave the trails alone. Do not wipe, spray, or mop between the bait and the nest while the bait is working.
4. Replenish bait as it is eaten. Heavy feeding in the first few days is a good sign.
5. If ants ignore the bait, switch type. Some colonies prefer sugar, others protein or grease, and preferences can change over time.
6. Keep bait out of reach of children and pets. Trained technicians place gel inside cracks and voids that neither can access.
Seal entry points
Ants enter through gaps most people never notice. In most homes, the most common entry points are cracked tile grout, gaps behind skirting boards, window and door frames, door thresholds, and the openings where pipes, cables, and AC lines pass through walls.
- Silicone sealant for window frames, door edges, and around pipes under sinks
- Grout or filler for cracks in floor tiles and along skirting
- Plaster or filler for larger wall penetrations around cables and AC lines
- Door sweeps or weather stripping for gaps under exterior doors
As a quick temporary fix, UC IPM suggests plugging entry holes with caulk or petroleum jelly.
Timing matters: seal exterior gaps early, but leave a crack with an active trail open until the bait has worked. Blocking a nest opening mid-treatment can push the colony deeper into the wall.
Remove food and water sources
Ants take bait faster when there is nothing else to eat or drink. Generally water is often a bigger draw than food:
1. Wipe counters, stovetops, and dining tables every evening.
2. Store sugar, honey, cereals, and pet food in airtight containers.
3. Use lidded bins, rinse recyclables, and empty kitchen bins daily.
4. Wipe spills immediately, including sticky rings inside the fridge.
5. Pick up pet bowls once your pet has finished eating.
6. Fix dripping taps and leaks under sinks and around washing machines.
7. Check AC drain lines and trays for condensation leaks.
AC condensation deserves special attention in the UAE. Split and ducted units run almost constantly through summer, and a blocked drain line can leak into ceiling voids and wall cavities, creating the warm, damp spaces ants prefer for nesting. Regular AC maintenance keeps drain lines clear. The same daily habits that starve ants also keep other kitchen pests away.
Why repellent sprays make ant problems worse?
Many indoor ant infestations in Dubai apartments and villas involve small, multi-queen species such as Pharaoh ants. According to the University of California Statewide IPM Program, Pharaoh ants are under 2 mm long, yellow to light brown, and nest inside wall voids, cabinet voids, and behind skirting boards, which is why their nests are rarely seen.
These colonies react to stress by budding.
When a repellent spray or contact insecticide disturbs a trail, groups of workers carry larvae and one or more queens to a new hiding spot and start a separate nest. One nest becomes several. UC IPM notes that insecticide sprays make Pharaoh ant infestations worse by dispersing colonies to new locations.
That is why DIY pest control often ends with more ants, not fewer. Vinegar, peppermint oil, and citrus sprays have a similar effect on a smaller scale. They break the scent trail and push foragers elsewhere, but the queen and nest stay untouched.