Mouse and Rat Treatment And Rodent Exclusion In Old Toronto

The initial call to the property was for an ongoing rodent infestation that turned out to be rats. Rats are a serious problem and a considered by the United Nations to be a danger to humanity similar to climate change. They cost global emergency food stores billions a year in damage and tainted food. Rats are the cause of mass destruction in the world’s food production plants and even grocery stores and restaurants. The total global destruction they cause I in the hundreds of billions. If you have rats you will need professional treatment. Currently, there is no real effective domestic treatment for rats. The solution is commercial and exclusion is always necessary.

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Exterior Inspection 

The initial inspection of the home revealed a great deal of exterior activity and burrowing near a garden box by the house’s extension. The burrowing was so bad they appeared to have pushed through into the foundation. This is a common occurrence as rats are very skilled burrowers and have large incisors that continue to grow for their whole life. They are more than able to chew away aged concrete, metal and PVC pipes. They can sever electric lines and start a fire in a wall or attic where it will be very hard to put out. The possible cause was the next-door neighbour’s property which was not being cared for properly and had a great deal of detritus that can attract rats.

Foundation gaps
Entryways into the ground can be used to access the foundation underneath
Foundation gaps
Further gaps in the foundation
Wall vent
Open wall vents are accessible to rodents and must be sealed off
Wall vent
This wall vent is plastic and easy to break.
Openings and entry ways
This opening at the base of the extension is completely open and accessible
Wall vent
This wall vent is not damaged, yet.
Area of high activity
This large planter is the center of the rat activity on the exterior.
Soffit openings
The soffit is accessible by a number of small rodents and must be sealed to prevent mice in the attic
The mess can bring rodents to your property as they will often find food in the garbage
An opening
This opening was partially covered with plywood, it must be properly excluded
Open wall vent
This large access point is great for adult rats trying to get inside
The fence
This is a fence dividing the yards of the two neighbours
Some of the mess
This is just some of the mess in the neighbours’ yard. If you cannot fix their problem we can fix yours.
Another entry way
A foundation gap you can stick your hand in.
Loose vent
This vent is so loose it can allow entry from almost anything.
Broken wall vent
Plastic wall vents often break and can be accessed easily
Plumbing opening
This is a plumbing opening and can allow rats inside


Interior Inspection

The initial inspection of the inside of the home revealed both rat activity in the lower house and mouse activity in the kitchen and attic. Mice are not like rats in that they live in a house permanently. They have much lower water content and are much harder to find. However, they still can cause similar destruction and can access even small entryways than rats can. The house was found to have a large amount of activity with feces found in the kitchen and attic.

Initial Measures

The initial measures taken by the technician the technicians initial measures were to treat the rat and mouse infestation inside and outside of the house. The rats on the exterior were treated with large weighted tamper-proof bait stations containing single-use commercial-grade rodenticide. While rats are careful of what they eat they are more voracious than mice and will eat enough poison in their first meal to feel the full effects. The bait is designed as coated blocks of birdseed which is rats’ favourite food. The birdseed blocks of rodenticide have holes that are used to attach them securely to the inside of the bait station making it impossible to remove large pieces. The entranceway is also a narrow tunnel followed by a tight turn into an atrium where the bait is stored with barriers to access it that will stop other animals from being poisoned. The interior was treated with snap traps that are baited and set for the singular purpose of catching rats in the house and preventing them from dying in the walls. The mice were treated with tamper-proof bait stations of a smaller size containing multi-use commercial-grade rodenticide that must be consumed multiple times to take effect. Mice are very careful with trying new food as they cannot regurgitate and any poison they eat will kill them. The added bonus is the poison acts on vitamin K, inhibiting its production leading to wide-scale organ failure and desiccation through anti-coagulation. The mice are safe to die in the walls because they desiccate entirely.

The rodenticide bait
The rodenticide bait was consumed in massiv quantities very quickly
Rebaiting is sometimes needed to end a virulent infestation
Bait stations
The bait is held down securely so there is no risk of poisoning other animals.

Proposed exclusion

The proposed exclusion by the technician was extensive. There were a full eighteen feet of the open soffit to be sealed using silicone gap sealant to prevent mice and other rodents access to the attic. There were seven open and accessible wall vents that were sealed off with black rubber-coated galvanized steel waterproof cages. One foundation gap was found to be an entry point and was sealed using a concreter or concrete repair substitute. A two-year warranty is always provided on exclusion work.

Soffit opening
Sealed off soffit openings with silicone caulking
Soffit opening
Sealed soffit openings
Soffit opening
Some openings were larger than others
Soffit opening
Soffit openings and gaps sealed with caulking
Wall vents
Wall vents sealed off with galvanized steel cages bolted to the wall
wall vents
More wall vents
wall vents
Hidden wall vent behind an air conditioner
Foundation gap
Foundation gap that was sealed off


In conclusion, The customer’s mouse issue and rat issues have been resolved using powerful commercial treatments and galvanized steel exclusion. The customer has not seen activity since the work was completed and is pleased with the results and has not had a repeat infestation.