Seasonal Pest Problems in Ottawa: What to Expect and How to Prepare

Dec 11, 2025By Hojjat Jahanian
Hojjat Jahanian

As the seasons change in Ottawa, so do the types of pests that invade our homes and gardens. Each season brings its own set of challenges, and being prepared can save you a lot of headaches. Understanding the common pests for each season and knowing how to deal with them is key to maintaining a pest-free environment.

Spring: Awakening of Pests

Spring is a time of renewal, but it's also when many pests become active after the winter lull. As the temperatures rise, insects such as ants, spiders, and wasps begin to emerge. These pests are often looking for food and nesting sites, which can sometimes lead them into your home.

To prepare for spring pest invasions, consider sealing cracks and crevices around your home, keeping your kitchen clean, and trimming back any vegetation that touches your house. These steps can help minimize entry points and make your home less inviting to pests.

ants on kitchen

Summer: Peak Activity

Summer is the peak season for pest activity in Ottawa. Common summer pests include mosquitoes, ticks, and fleas. These pests not only cause discomfort but can also pose health risks through bites and the diseases they may carry.

To protect yourself and your family, it's important to use insect repellents, wear protective clothing, and ensure your screens and doors are in good repair. Keeping your yard free of standing water can also help reduce mosquito populations.

Dealing with Wasps and Bees

Wasps and bees can be particularly aggressive during the summer months. If you notice a nest near your home, it's best to contact a professional pest control service to safely remove it. Avoid swatting at these insects, as it can provoke them.

wasps nest

Fall: Preparing for Winter

As the weather cools, many pests begin to seek shelter indoors. Mice and rats are common fall invaders, looking for warmth and food sources. These rodents can cause significant damage to your home and even pose health risks.

Prevent rodent infestations by sealing entry points, storing food in airtight containers, and keeping your home tidy. Setting traps and using bait stations can also be effective in controlling rodent populations.

Dealing with Stink Bugs

Stink bugs are another fall nuisance, often seeking warmth inside homes. They can be challenging to manage once inside, so prevention is key. Repairing screens and sealing gaps around windows and doors can help keep them out.

stink bugs

Winter: Vigilance is Key

While winter is generally a time of reduced pest activity, some pests continue to be a problem. Rodents, in particular, remain active and can cause issues if they find their way indoors.

Regularly inspect your home for signs of pests, such as droppings or gnaw marks, and address any issues promptly. Keeping firewood and other potential nesting materials away from your home's foundation can also help.

By understanding the seasonal pest problems in Ottawa and taking proactive measures, you can protect your home and enjoy a pest-free environment all year round. Staying informed and prepared is your best defense against unwanted invaders.