📋 Project Overview
💡 Key Takeaways
- School canteens are high-risk ant environments due to constant food residue and moisture
- Fire ants and black ants require different treatment approaches — gel baiting targets both effectively
- Surface spraying alone does not eliminate ant colonies; the queen must be reached
- Food-safe gel baits allow treatment in active food preparation areas without closure
- A combined baiting and perimeter approach prevents re-infestation from outdoor colonies
Ant Control — School Canteen Setia Alam Case Study
The canteen operator contacted Mr Pest Control Shah Alam after a months-long struggle with fire ants and black ants in their school canteen in Setia Alam. The infestation had spread from the outdoor drains and surrounding ground to the canteen's food preparation counter, storage shelves, and serving area — a serious hygiene and food safety concern.
The Problem
The canteen had been dealing with recurring ant activity for close to four months before calling us in. The operator had tried over-the-counter ant spray and ant traps purchased from a hardware store. While the sprays cleared foraging workers temporarily, the ants always came back — often in greater numbers and in new locations.
When our technician arrived for the inspection, the situation was clear:
- Active fire ant trails running from the outdoor drain along the exterior wall into the kitchen
- Black ant nesting behind the wall-mounted shelving in the dry goods storage area
- Fire ant activity near the gas cooker base and underneath the food preparation counter
- Multiple ant entry points along the window frame, floor-wall junction, and utility pipe openings
- Significant food debris and grease build-up in hard-to-reach corners — serving as a continuous food source
The root cause was a combination of accessible food sources, persistent moisture from the cooking area, and direct ant pathways from the outdoor garden soil and drain into the building. Previous DIY spraying had disrupted the trails and caused the colony to scatter and establish new routes deeper into the kitchen.
Our Approach
Given that this was an active food premises, we needed a treatment plan that was effective, fast-acting, and safe to apply without requiring the canteen to close for extended periods. Surface chemical spraying inside a food preparation area carries health and compliance risks, so we prioritised a gel baiting strategy combined with an exterior perimeter treatment.
Our ant control approach for this job involved two phases:
- Phase 1 — Interior gel baiting: Placement of food-grade gel bait at all active ant trails inside the canteen. The gel is slow-acting by design — worker ants consume it and carry it back to the colony, eventually reaching and eliminating the queen.
- Phase 2 — Exterior perimeter treatment: Application of a residual insecticide along the full exterior perimeter of the canteen building, focusing on drain edges, wall-ground junctions, and soil around the building foundation. This creates a barrier that prevents outdoor fire ant colonies from re-entering.
We also identified and sealed all visible entry points — gaps around utility pipes, the window frame gap, and a crack at the floor-wall junction — using appropriate sealant to reduce future access points.
The Treatment
Our technician carried out the full treatment within a single morning session before the canteen opened for the day, minimising disruption to daily operations. The steps taken were as follows:
- Pre-treatment inspection: Final mapping of all active ant trails and colony hotspots before application began.
- Interior gel bait placement: Gel bait dots were placed in small amounts at all identified ant trails — along skirting boards, underneath the prep counter, behind shelving, and near the cooker base. Placement was deliberate to maximise contact with foraging workers without contaminating food surfaces.
- Entry point sealing: Gaps at the window frame, floor-wall junction, and utility pipe openings were sealed to cut off active entry routes.
- Exterior perimeter residual spray: A low-odour residual insecticide was applied along the full exterior base of the canteen, around drain openings, and into the soil near the building foundation. This addressed the outdoor fire ant colony that was the original source of the infestation.
- Documentation and handover: We documented all bait placement locations and provided the canteen operator with a simple aftercare checklist — including hygiene practices that reduce ant attractants.
The canteen was ready to open by mid-morning as planned. No food items or surfaces required removal prior to treatment.
Results
At the 2-week follow-up inspection, ant activity inside the canteen had been completely eliminated. The fire ant trails from the exterior drain were no longer active, and no new ant entry was observed at any of the sealed points.
The canteen operator confirmed that within the first 3 days after treatment, ant numbers had visibly dropped. By day 7, there were no ants seen at the prep counter or storage area. The follow-up inspection at 2 weeks confirmed full colony elimination — no live trails, no new nesting activity.
We also advised the operator on ongoing hygiene practices: ensuring grease and food debris are cleaned from hard-to-reach areas regularly, keeping floor-wall junctions dry, and scheduling a routine inspection every 6 months given the high-risk nature of food service premises.
"We had tried everything from the hardware shop and the ants just kept coming back. After Jason's team came in, the problem was gone within a week. Very professional — they worked quickly and the canteen was not disrupted at all."
— Canteen Operator, Setia Alam
📚 Sources & References
- Malaysian Pest Management Association (MPMA) — Food Premises Pest Control Guidelines
- Ministry of Health Malaysia — Food Safety & Hygiene Standards for Canteens
- Jabatan Perkhidmatan Veterinar Malaysia — Approved Pesticides for Food Premises
- Mr Pest Control Shah Alam — 8 Years of Field Experience (Est. 2018)
Mr Pest Control Shah Alam