Do Fleas and Ticks Die in the Winter?

• No, fleas and ticks don't automatically die in the winter. While cold weather slows their activity, many survive by finding shelter, living on animal hosts or becoming active again during milder winter weather.
• Freezing temperatures don't eliminate every flea and tick. Many survive indoors or in protected outdoor areas until conditions improve.
• Fleas and ticks use different survival strategies. Fleas often survive on pets or inside homes, while ticks shelter beneath leaf litter, brush and snow cover.
• Winter doesn't mean you're completely in the clear. Mild weather, wildlife and pets can all contribute to continued flea and tick activity during the colder months.
• Year-round prevention matters. Maintaining your yard and continuing flea and tick prevention can help reduce pest pressure before spring arrives. 

Many homeowners assume the first hard frost signals the end of flea and tick season. Unfortunately, these pesky parasites don't always get the memo. 

While winter can reduce flea and tick activity, it rarely eliminates these pests completely. Depending on where you live, fleas and ticks can survive by finding shelter, living on animal hosts or becoming active again during mild winter weather. 

 Understanding how these parasites survive the colder months can help you better protect your yard, pets and family year-round. In this guide, we'll explain how fleas and ticks survive winter, why prevention still matters and what you can do to help reduce pest populations before spring arrives. 

Many adult fleas survive the winter by moving indoors, where warm temperatures and pets provide ideal conditions to feed and reproduce. 

Inside your home, fleas can be found: 

• On dogs and cats
• In carpets and rugs
• In pet bedding
• On upholstered furniture 

Outdoor fleas may also survive in protected areas around your property, such as beneath decks, around foundations or anywhere organic debris provides insulation from the cold.  

Their life cycle also works in their favor. Flea eggs, flea larvae and flea pupae can remain protected until conditions improve, allowing a flea infestation to develop even after weeks of cold weather. That's why homes with pets can experience flea activity year-round if flea prevention isn't maintained. 

Whether you're trying to prevent fleas or manage an existing infestation, consistent flea treatment and flea control are more effective than waiting until spring. 

Unlike fleas, ticks spend most of their lives outdoors and are well adapted to surviving winter. 

Many ticks seek shelter beneath leaf litter, brush piles, wooded areas and snow cover, which help insulate them from dramatic temperature changes. Rather than dying, many enter a period of reduced activity until conditions improve. 

Some species, including blacklegged ticks (also known as deer ticks), may become active again during a mild winter day whenever temperatures rise above freezing. An adult blacklegged tick searching for a host can still pose a risk, even during the colder months. 

 Other species, such as the American dog tick, survive winter differently, but all rely on protected environments to make it through until the warmer months. 

Although winter generally lowers the chance of a tick bite, it doesn't eliminate the risk of exposure or tick borne disease. That's why tick prevention and tick control remain important throughout the year. 

Just because flea and tick activity slows down doesn't mean your yard is pest-free. 

Wildlife such as deer, squirrels, rodents and other animals continue moving through neighborhoods during winter, carrying fleas and ticks with them. Pets can also bring these pesky parasites indoors after spending time outside. Combined with sheltered areas around your property, these conditions allow flea and tick populations to persist until spring. 

Taking simple steps during winter can help reduce outdoor pest pressure before peak tick season returns. 

Can Fleas Survive Inside Your Home During Winter? 

Yes. Once fleas get indoors, they're protected from the cold. Warm temperatures, pets and soft furnishings like carpets, pet bedding and upholstered furniture create ideal conditions for fleas to survive and reproduce throughout the winter. 

When Do Fleas and Ticks Become Active Again? 

Activity depends on the weather. Fleas remain active indoors year-round, while many tick species begin moving again whenever temperatures rise above freezing. As spring approaches, both pests become increasingly active. 

Can You Get a Tick Bite in the Winter? 

Yes. Although the risk is lower than during peak tick season, some ticks remain active during mild winter weather. If you're hiking, gardening or spending time in wooded areas, it's still a good idea to check yourself and your pets for ticks afterward. 

Why Is Winter a Good Time for Flea and Tick Prevention? 

Winter is an ideal time to reduce conditions that allow fleas and ticks to survive. Maintaining your yard by reducing tall grass and leaf litter in the landscape throughout the colder months can help limit pest populations before they rebound in spring. 

For answers to more lawn care and pest control questions, visit the TruGreen FAQs.