Even admitting that pests have a role to play in our environment, there are some of these pests which may be considered as more of a menace to our lives. Their bites can be painful and may cause severe reactions. Most of all, they can be carriers of diseases that may put our lives at risk. There are those that may be classified as highly dangerous since these pests often spread serious diseases and may cause injuries that can be fatal or life-threatening. In most parts of Canada and particularly Toronto, three such highly dangerous pests are the following:


Fleas are small and wingless parasites that live and breed in the bodies of animals. They are commonly found on beddings of our pets since they are attracted to fur and hair. These pests may also survive in the bodies of rats, raccoons, and other animals. While there may be over 2,500 species of fleas, only a few species are found in households.

These pests are very dangerous since their bites can be very itchy and may cause blood loss and irritation. Allergic reactions may result with constant scratching that may cause breaks in the skin. Fleas have been known to spread diseases including those that may threaten our lives. They have been held responsible for carrying and spreading bubonic plague, an epidemic that killed over a fourth of the world’s population in the 14th century.


It should be remembered that there are mosquitoes that bring more harm than just an itch and small swellings in our skins. These very small insects that are found in places near water can be carriers of certain viruses that can be fatal to those that may be bitten. There are viruses that may cause encephalitis or the swelling of the brain, a disease that have resulted to seasonal epidemics in North America. Symptoms associated with this condition include high fever, severe headache, neck stiffness, weakness of the muscles, disorientation, and paralysis. In other countries, mosquitoes have been known to be responsible for the spread of malaria, yellow fever, and dengue fever.


These small eight-legged parasites are known as carriers of the very common and fatal Lyme disease, which is very common in North America. It is believed that ticks spread more diseases every year than all mosquitoes combined. Aside from Lyme disease, they carry and transmit Colorado tick fever, Rocky Mountain spotted fever, babesiosis, and tularemia.

Ticks are found in areas where vegetation can provide them protection such woodland and fields with grasses. Because of their leaping abilities, they can easily attach themselves to animals and humans. So it is best to check for ticks before coming from outdoors that are wooded or grassy.

Preventive Measures Very Important

Considering the harm these pests can bring, it is very important to take preventive measures. There are many ways to achieve this. Cleaning the surroundings should be made regularly. Grasses should be cut or cleared to prevent ticks from multiplying. Water from used tires or other objects should be removed. Grooming of pets should be maintained to prevent parasites from growing. Perhaps you can avail of the services of professional since these people have the knowledge and skills to address these problems.

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