Most common tick species live for about two years from egg to death, though some can stretch well beyond that. The exact lifespan depends on the species, climate, and whether the tick finds hosts to feed on at each life stage. Some unfed ticks can survive for years in a sort of holding pattern, waiting for their next blood meal.
The Two-Year Life Cycle
Ticks don’t live their lives the way most insects do. They go through three feeding stages (larva, nymph, adult), and each one requires finding a host, feeding for days, then dropping off to digest and molt into the next stage. The blacklegged tick, also called the deer tick, typically completes this entire cycle in about two years. Larvae hatch in late summer, feed on a small animal like a mouse, then drop off and overwinter. The following spring or summer they emerge as nymphs, feed again, and molt into adults by fall. Adults then seek a third and final host, usually a deer or similar large animal.
The American dog tick follows a similar two-year pattern, as does the lone star tick. In tropical climates, some species can compress the whole cycle into less than a year. In cold climates, where ticks enter a dormant state during winter, the cycle can stretch past three years.
How Long Ticks Survive Without Feeding
This is where ticks get impressive, and a little unsettling. Each species has a different starvation tolerance at each life stage, but the numbers are consistently higher than most people expect.
- American dog tick: The marathon survivor. Unfed larvae can last up to 540 days. Nymphs can go 584 days. Adults hold the record among common species at up to 1,053 days, nearly three years, without a single blood meal.
- Blacklegged (deer) tick: Unfed larvae typically live less than a year. Nymphs that miss their first feeding season can survive through two additional seasons. Unfed adults can last just under a year.
- Lone star tick: Larvae survive up to 279 days unfed. Nymphs can go up to 476 days. Adults manage up to 430 days.
- Brown dog tick: Larvae last up to eight months without food. Nymphs survive about three months. Adults can hold out for up to 18 months.
- Rocky Mountain wood tick: Larvae typically need a host within 30 days but some last up to 117 days. Nymphs survive over 300 days. Adults can go up to 600 days.
These numbers represent maximums under favorable conditions, meaning cool temperatures and decent humidity. In hot, dry environments ticks dehydrate and die much faster.
Soft Ticks Live Even Longer
The species above are all hard ticks (family Ixodidae), the ones most people encounter. Soft ticks (family Argasidae) are a different group, typically found in animal burrows, caves, and rustic cabins rather than in tall grass. Their life cycles generally run several years longer than hard ticks, and they have remarkable starvation resistance, surviving years between meals. Most people will never encounter a soft tick, but they’re worth knowing about if you spend time in older rural structures in the western U.S.
How Ticks Survive Winter
Cold weather slows ticks down but rarely kills them outright. Research from the University of Maine found that blacklegged tick nymphs survive harsh winter temperatures as long as they have insulation from leaf litter and snow cover. Even in northern Maine, where winters are severe, ticks overwintered successfully under a layer of leaves and snowpack. The snow itself acts like a blanket, keeping ground-level temperatures well above the air temperature. This is why a brutal winter doesn’t necessarily mean fewer ticks the following spring.
Adult blacklegged ticks are actually active during fall and winter in much of the northeastern U.S., with peak activity in late fall and again in late winter. They can be found questing for hosts on any day when temperatures climb above freezing.
How Long Ticks Survive Indoors
A tick that hitches a ride inside on your clothing or your pet doesn’t die immediately. A 2024 study from Ohio State University found that ticks placed on common household flooring survived for weeks. Gulf Coast ticks lasted an average of 18 days indoors, with survival reaching about 25 days on vinyl flooring. Lone star ticks averaged 11 days, surviving longest (about 15 days) on long-pile carpet. Across both species and every flooring type tested, minimum survival exceeded seven days.
Indoor air is generally too dry for ticks to thrive long-term, which is why most species can’t establish breeding populations inside your home. The brown dog tick is the notable exception. It can complete its entire life cycle indoors and infest homes, particularly in warmer climates.
Killing Ticks on Clothing
If you’ve been in tick habitat, tossing your clothes in the dryer on high heat for at least six minutes kills ticks effectively. That’s the quickest method. Washing alone is less reliable: ticks survive cold water and even warm water up to about 115°F. You need hot water of at least 130°F to kill them in the wash. If you wash clothes first in anything less than that temperature, plan on running the dryer on high heat for up to 50 minutes afterward to make sure no ticks survive.
The most efficient approach is to put dry clothes straight into the dryer before washing. The combination of high heat and low moisture is what kills ticks fastest.