Wall Vent Covered in Mesh

Case Study: Mice infesting upper floors in Vaughan

In this case study we will revisit a mouse infestation in a residential house in Vaughan. The mouse infestation seemed to have begun from the lower levels of the home. The homeowner complained of mouse activity in the basement. A technician was dispatched to the site to do an exterior inspection.

Interior Inspection

As mentioned earlier, the technician started to conduct an exterior inspection. The exterior inspection is the most important part of the mouse exclusion process to get mouse out of the property by completely eradicating them. The technician carefully inspects the exterior of the property and goes around the entire property to find signs of wear and tear.

What the technician hopes to find here is the main entry point that the mice use to enter and exit the property. While doing so, he also compiles a list of vulnerable points that can be exploited by other pests, wildlife animals, or bugs. This list is then presented to the homeowner to reinforce the exterior. It’s imperative that these are followed through as soon as possible as to avoid another infestation.

Open Wall Vent Entry Point
Several entry points were found throughout the residential property

The inspection was fruitful. The technician found 3 big foundational gaps. Foundational gaps are a very concerning sign that signifies that the structural integrity has been compromised. Mice take any opportunity to get inside to fulfill their criteria.

These are shelter, warmth, and food. Once these are fulfilled, mice can breed at an exponential rate since they are sexually productive at just a mere 6 weeks old.  In addition, utility lines needed also sealing. These utility lines are well out of service. These are used to move throughout the property without being noticed. This explained why mice were mainly found in the basement ceiling.

Initial Measures Taken

To take care of the mice, bait traps are placed outside. The baits contain rodenticide. Once they are eaten by the mice, they perish. Bait traps are strategically placed around the exterior, so whenever mice go outside and cross the bait stations, they cannot resist the baits. Inside, snap traps are placed. They will kill immediately on contact.

Follow up Visit

The technician come back for a second visit after a few days. He checks up on the bait stations and sees the result is positive. Once the mice were confirmed to have perished, the technician moved on to the sealing process. Sealing is done using galvanized steel mesh. Galvanized steel mesh is an incredible flexible and durable material that is that easy to apply to a lot of surfaces. In this case, the galvanized steel mesh was applied to the foundational gaps. To seal them properly, the foundational was first sealed using concrete.


This mouse infestation highlights a concerning part about the properties we live in. Residential houses have a lot of vulnerable points that can make mouse infestations a reality very quickly. The way to prevent this is to have an exterior inspection done by people that have profound knowledge on the behavior patterns of mice and other rodents such as rats.

Wall Vent Covered in Mesh
The wall vent was covered in a mesh that is too strong for rodents to chew and too narrow for them to crawl through.

They can inform house owners where the weak spots are so the residential property can get fixed and reinforced.  The technicians at Mouse Control can help with that. We have seasoned professionals licensed and certified that are specialized in mouse control. Contact our customer support specialists to book an appointment and receive a free consultation.

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