Job Overview
Location: Whitby, Ontario
Structure: Small one-storey bungalow
Problem: Interior rodent activity initially reported as mice
Service: Rat treatment and structural exclusion
Visits: 3
Summary
We responded to reports of rodent activity inside a small bungalow in Whitby. An initial inspection confirmed that rats, and mice, were present and accessing the structure through foundation-level gaps. The service was completed over three visits and included exterior baiting, structural exclusion, and follow-up monitoring. No further interior activity was reported at completion.
Background / Property Context
The property is a small, single-storey bungalow with a stone and concrete foundation. Vegetation and soil were present along the foundation perimeter, and several utility and siding transition points were visible at ground level.
Customer Concern
The homeowner reported ongoing rodent activity inside the home during September. There were no weather-related limitations affecting inspection or treatment.
Inspection & Findings
During the initial visit, our technician identified rat activity on both the interior and exterior of the property. Foundation-level gaps and siding-to-foundation transition points were observed that could allow rodent entry. Interior monitoring confirmed active rodent presence consistent with rats rather than mice.
Photos taken during the inspection show open gaps along the foundation wall and areas where siding meets masonry. Additional images show monitoring and treatment devices placed both inside and outside the structure.
Cause Analysis
Rats commonly exploit small structural gaps at or below grade, particularly where foundation materials meet siding or utility penetrations. In this case, aging mortar and unsealed gaps at foundation corners created accessible entry points. Ground-level cover along the perimeter further supported rodent movement and concealment.
Treatment / Removal
During the first visit, two large, weighted, tamper-resistant bait stations were installed on the exterior to address the exterior rat population. All pest control work was performed by a licensed exterminator in accordance with Ontario Ministry of the Environment guidelines.
Interior activity was monitored using mechanical traps placed in identified travel areas. The customer was advised that structural exclusion would be required to fully resolve the issue.
Exclusion & Repairs
On the second visit, after approval was provided, exclusion work was completed. Two foundation gaps were sealed using mortar and galvanized steel mesh. A one-way rat door was installed at the primary entry point to allow any remaining rodents to exit without re-entry.
Photos from this stage show galvanized mesh secured along the foundation and a one-way door installed at the identified access location.
Outcome & Confirmation
On the final visit, all exterior bait stations were rebaited and inspected. Exclusion materials were checked and found to be intact and undamaged. The homeowner reported no further rodent activity inside the home, and no new signs were observed during inspection. The service was then concluded.
Technician Notes
The initial assessment was completed by Grant, who identified that the issue involved rats rather than mice. Structural exclusion was necessary to prevent re-entry, and once completed, interior activity resolved as expected.
This work was completed by our Whitby pest control team. For pest control inquiries in Whitby, contact 905-581-9985.