Skip to content
Menu

How Cold Does It Have to Be to Kill Ticks?

Ticks are the worst! They also turn out to be very hardy buggers. I was doing some reserch into how cold it has to be to start killing ticks and it’s gotta be pretty cold!

When Do Ticks Become Inactive?

Ticks slow down and become dormant when temperatures drop below 7°C. At this point, they stop actively seeking hosts, but they don’t die. Instead, they hide in leaf litter, soil, or under snow, waiting for warmer days.

What Temperature Actually Kills Ticks?

To kill ticks, you need sustained exposure to extreme cold:
  • Below -12°C for several consecutive days can start killing ticks in natural outdoor conditions, but survival rates vary.
  • In controlled environments, such as a freezer, temperatures below -20°C for at least 24 hours will kill most ticks.

So even with this recent cold snap keep checking for ticks to be safe, esspecially on your pets at this time of year!

  • Bryan Tait is an award-winning journalist based in New Brunswick. He’s a 2008 graduate of St. Thomas University’s journalism program, and a 2021 graduate of the University of New Brunswick’s law program. Contact Bryan at taitb@radioabl.ca.

    View all posts
loader-image
Port Hawkesbury
3:37 pm, Apr 13, 2026
weather icon 1°C | °F
L: 1° H: 1°
snow

What’s Trending