A few years ago, most people in Toronto rarely thought about ticks. Today, more and more GTA families find them on their kids, their dogs and themselves after a walk in the ravine or an afternoon in the garden.
This guide covers what you need to know: which ticks live in the GTA, where you are most likely to meet them, how to remove one safely, and how to make your own yard less tick-friendly.
This article is general information, not medical advice. If you are worried about a tick bite or symptoms, contact your doctor or local public health unit.
Quick Answer
The tick that matters most in the GTA is the blacklegged tick, which can carry Lyme disease. It lives in wooded and brushy areas, including ravines, conservation areas and overgrown edges of backyards. Prevent bites with repellent, long clothing and daily tick checks, remove any attached tick quickly with tweezers, and reduce tick habitat in your yard.
Which Ticks Live in the GTA?
| Tick | What It Looks Like | Lyme Disease Risk |
|---|---|---|
| Blacklegged tick (deer tick) | Small, dark legs, reddish-brown body. Nymphs are the size of a poppy seed. | Yes, the main carrier of Lyme disease in Ontario |
| American dog tick | Larger, brown with white or cream markings | Does not transmit Lyme disease |
| Groundhog tick | Small, reddish-brown, often found on pets | Rarely bites people |
If you are not sure what you found, Ontario residents can submit a photo for identification through the free eTick service.
Where Are Ticks Found in Toronto and the GTA?
Blacklegged ticks need humidity and cover. They wait on low plants and leaf litter for a person or animal to brush past. You are most likely to meet them in:
- Wooded ravines and river valleys
- Conservation areas and trails
- Tall grass and brush at the edge of parks
- Leaf litter, stone walls and woodpiles
- Backyards that border forest, ravines or naturalized areas
Public Health Ontario publishes an updated map of estimated Lyme disease risk areas each year, and several areas in and around the GTA are now included. Properties near the Rouge Valley in Scarborough, the escarpment in Burlington and the forests around Barrie are good examples of where extra care makes sense.
When Are Ticks Active?
Ticks are not only a summer problem. Blacklegged ticks can be active any time the temperature is above freezing and the ground is not covered in snow.
- Spring and early summer: tiny nymphs are active. They are hard to see, so many bites go unnoticed.
- Fall: adult ticks are active and looking for a host before winter.
- Mild winter days: adults can still be found on warm days.
How to Prevent Tick Bites
- Use a Health Canada-registered repellent with DEET or icaridin on exposed skin, following the label
- Wear long sleeves, long pants and closed shoes on trails, and tuck pants into socks
- Choose light-coloured clothing, which makes ticks easier to spot
- Stay in the middle of trails and avoid brushing against tall grass
- Shower soon after coming indoors
- Do a full-body tick check every day, including the scalp, behind the ears, under the arms, behind the knees and around the waist
- Put outdoor clothes in the dryer on high heat for at least 10 minutes to kill any ticks
- Check your pets and ask your veterinarian about tick prevention
How to Remove a Tick Safely
The faster a tick is removed, the lower the risk. A blacklegged tick usually needs to be attached for at least 24 hours to pass on Lyme disease.
- Use clean, fine-tipped tweezers.
- Grab the tick as close to the skin as possible.
- Pull upward slowly and steadily. Do not twist or squeeze its body.
- Clean the area with soap and water or rubbing alcohol.
- Save the tick in a sealed container or take a clear photo, and note the date.
Avoid old tricks like matches, nail polish or petroleum jelly. They can make the tick release more fluid into the skin.
Watch the area for the next 30 days. If you notice an expanding red rash, sometimes shaped like a bull’s-eye, or flu-like symptoms such as fever, fatigue or joint pain, see a doctor and mention the tick bite.
How to Make Your Yard Less Tick-Friendly
You cannot change what is in the ravine behind your house, but you can make your own yard a much less welcoming place for ticks.
- Keep the grass short, especially along paths and play areas
- Rake up leaf litter in spring and fall
- Create a dry border of wood chips or gravel about a metre wide between the lawn and wooded areas
- Move play sets, seating and patios away from the edge of the woods and into the sun
- Stack firewood neatly in a dry, sunny spot, away from the house
- Discourage mice and deer, which carry ticks, by sealing bird feeders and removing brush piles
These steps also help with mosquitoes, since both pests love shade, humidity and overgrown vegetation. Our guide to home mosquito treatments covers the overlap.
When to Consider Professional Tick Control
Yard changes reduce tick numbers, but they do not eliminate ticks that arrive on wildlife from nearby woods. Professional treatment is worth considering if:
- Your property backs onto a ravine, forest, trail or conservation area
- You have young children or pets who play in the yard
- You have already found ticks on people or pets after time at home
- You live in or near an area Public Health Ontario lists as a Lyme risk area
Our tick control service targets the shaded, brushy edges, leaf litter and ground cover where ticks wait for a host. Many families add it to their seasonal mosquito program so both pests are treated in the same visit.
Frequently Asked Questions
Do all ticks carry Lyme disease?
No. In Ontario, only the blacklegged tick is known to transmit Lyme disease, and not every blacklegged tick is infected. That is why identifying the tick and removing it quickly both matter.
Can I get Lyme disease from a tick in my own backyard?
It is possible if your yard borders wooded or brushy areas where blacklegged ticks live. Most bites happen during everyday activities close to home, such as gardening or playing outside.
Should I keep the tick after removing it?
Yes. Place it in a sealed container or take a clear photo and note the date. This helps you or your doctor identify it if symptoms appear.
Does mosquito treatment also kill ticks?
Not necessarily. Ticks live low in leaf litter and ground cover, while mosquitoes rest higher in shrubs and foliage. Effective tick control treats different areas, which is why it is offered as its own service or add-on.
Worried about ticks around your home? Call (416) 995-3383 for a free quote on tick control in Toronto and the GTA.