💡 Key Takeaways
- Rats in false ceilings are a fire risk — gnawed electrical cables cause short circuits and can trigger office fires
- Commercial office buildings in Shah Alam City Centre are vulnerable due to shared utility risers and loading bays
- Tamper-resistant bait stations are used in non-public zones to keep the office safe during treatment
- Physical exclusion — sealing all entry gaps — is essential to prevent re-infestation after baiting
- Regular monitoring visits are recommended for commercial properties to catch activity early
📋 Project Overview
Rat Control — Corporate Office, Shah Alam City Centre
The facilities manager of a corporate office located in a mid-rise commercial building in Shah Alam City Centre contacted us after staff reported hearing scratching sounds above the suspended ceiling during quiet hours. Within a week, the building's M&E team discovered gnaw marks on several electrical cable runs in the ceiling void above the open-plan workspace.
This was not just a hygiene issue — damaged insulation on live cabling is a genuine fire hazard. The client needed fast, discreet action that would not disrupt daily office operations.
The Problem
Our initial inspection involved accessing the false ceiling panels across three floors. What we found confirmed the severity of the infestation:
- Active rat runways along M&E cable trays running the full length of the ceiling void
- Gnaw damage on at least six sections of electrical cabling, including data lines and power conduits
- Evidence of a nesting site near the air-conditioning ductwork on the second floor
- Rat droppings and grease marks along structural beams — indicating established routes used nightly
- Two main entry points identified: an unsealed pipe chase in the loading bay and a gap around the fresh air intake on the external wall
The species identified was Rattus rattus (roof rat), which is the most common rat species found in multi-storey commercial buildings across Shah Alam. Roof rats are agile climbers and readily colonise ceiling voids and cable runs in air-conditioned environments.
Our Approach
Given the occupied office environment, we designed a treatment plan that prioritised safety and minimal disruption. All ceiling access work was scheduled after office hours. Bait stations were placed strictly in the false ceiling void, service corridors, and the loading bay — never in occupied staff areas.
We coordinated with the building's M&E contractor to flag the cable sections that required repair, ensuring the electrical team could proceed once the rat activity had ceased. Our rat control programme for commercial buildings follows a structured sequence: inspect and map, bait and monitor, then exclude and proof.
The Treatment
The treatment was carried out across one full day with a two-technician team:
- Ceiling survey: We systematically lifted ceiling panels to map all active runways, nesting sites, and entry/exit points. Photographs were taken and a site plan was marked up for the client.
- Tamper-resistant bait stations: Twelve Protecta LP bait stations loaded with first-generation anticoagulant block bait were installed along confirmed rat runways in the ceiling void. Additional stations were placed at the loading bay and near the external entry points.
- Exclusion sealing: The two confirmed entry points — the pipe chase in the loading bay and the fresh air intake gap — were sealed using a combination of wire mesh, expanding foam, and cement mortar. A third potential entry point around the riser room door frame was also sealed.
- Monitoring schedule: We returned at Day 7 and Day 14 to inspect bait take, replenish stations, and check for any new activity. By the Day 14 visit, bait take had dropped to zero and no new grease marks or droppings were observed.
Results
By the end of the 4-week programme, rat activity in the building had been fully eliminated. The facilities manager confirmed that scratching sounds had ceased by the end of the first week. The M&E contractor subsequently carried out repairs on the damaged cabling sections, and the building's electrical system was inspected and cleared.
We provided the client with a written report documenting all entry points sealed, bait station locations, and recommendations for ongoing prevention — including a quarterly monitoring programme, which the client enrolled in. For corporate offices in busy commercial districts, a routine monitoring schedule is the most cost-effective way to avoid a repeat infestation before it becomes severe.
"The team was professional and discreet throughout. They completed the ceiling work outside business hours and kept us fully updated. The rat problem has been resolved and we've enrolled in their quarterly monitoring programme."
— Facilities Manager, Corporate Office, Shah Alam City Centre
📚 Sources & References
- Malaysian Pest Management Association (MPMA) — Commercial Rodent Control Standards
- Department of Agriculture Malaysia — Approved Rodenticide Products List
- Jabatan Bomba dan Penyelamat Malaysia — Fire Risk from Gnawed Electrical Cabling
- Mr Pest Control Shah Alam — 8 Years of Field Experience (Est. 2018)
Mr Pest Control Shah Alam