Ticks do live in California’s Central Valley, but your risk depends heavily on where you spend time. On the valley floor in Fresno and Clovis, Lyme disease is uncommon. In the oak woodlands and grassy foothills of the Sierra Nevada, a short drive east, the western blacklegged tick that spreads Lyme disease is much easier to find.
Valley Wide Pest Control helps Central Valley families keep pests away from homes, yards, and pets. This guide covers the ticks you are likely to meet, how real the Lyme risk is, and how to avoid bites at home and on the trail.
Are There Ticks in the Central Valley?
Yes. California has 48 established tick species, and several bite people regularly. The western blacklegged tick has been reported in 56 of California’s 58 counties, and it attaches to people more often than any other tick in the state.
Ticks are most common where there is cover and wildlife: leaf litter, tall grass, brush, and the edges where grassland meets woods. Irrigated lawns and open sunny yards are poor tick habitat, which is why most valley-floor homes see far fewer ticks than foothill properties.
Common Ticks Around Fresno and the Foothills
| Tick | Where you meet it | Main concern |
| Western blacklegged tick | Foothill oak woodland, leaf litter, logs, grassy trail edges | The only tick that spreads Lyme disease to people in California; also anaplasmosis |
| Pacific Coast tick | Brush, grassland, and trail edges | Pacific Coast tick fever; other rickettsial illness |
| American dog tick | Grassy and brushy areas, often on dogs | Rocky Mountain spotted fever (rare) |
| Brown dog tick | In and around homes and kennels with dogs | Can complete its life cycle indoors; Rocky Mountain spotted fever (rare) |
| Soft ticks | Rodent nests, cabins, and animal burrows | Tick-borne relapsing fever |
The brown dog tick is the one most likely to show up inside a valley home. It feeds on dogs, drops off, and can settle into kennels, baseboards, and furniture, so an indoor tick problem usually starts with a pet.
Can You Get Lyme Disease in Fresno?
Lyme disease is possible but uncommon in the Fresno area. The California Department of Public Health reports that statewide Lyme incidence averaged less than 1 case per 100,000 people per year from 2013 through 2019, and about 1 in 3 California cases are in people who were infected while traveling out of state.
The highest-risk areas in California are the northwestern coastal counties and the Sierra Nevada foothills. For Fresno residents, that means trips to foothill communities, Sequoia and Kings Canyon, and other oak woodland areas carry more risk than a backyard in town.
Why Nymphs Matter Most
Nymphs bite most people who get Lyme disease, the early stage of the western blacklegged tick. According to the UC Statewide IPM Program, an unfed nymph is about the size of a poppy seed. In Northern California areas where Lyme disease occurs, roughly 2 to 15% of nymphs carry the Lyme bacterium, compared with 1 to 2% of adults.
Nymphs wait in leaf litter, on logs, and at the base of tree trunks rather than climbing grass. Sitting on a log, leaning against an oak, gathering firewood, or gardening under trees all raise the chance of picking one up.
Lyme Disease Symptoms
Lyme disease often starts with a slowly expanding red rash at the bite site, typically 3 to 32 days after the bite, along with fatigue, headache, fever, or chills. Untreated infections can later affect joints, nerves, or the heart. See a doctor if you develop a rash or flu-like illness after time in tick habitat; most cases are cured with antibiotics when treated early.
When Are Ticks Most Active?
Tick season in California runs much of the year, with different stages active at different times. In central and southern California, adult western blacklegged ticks look for hosts from late November through late April or early May, especially after fall and winter rains. Nymphs in this region are most active from late winter into late spring.
That timing surprises many valley residents. Winter and spring hikes in the foothills, when the hills are green and temperatures are mild, are the year’s highest-risk outings.
How to Prevent Tick Bites
- Wear long pants and long sleeves, tuck in your shirt, and tuck pant legs into socks.
- Treat clothing with a permethrin product, or use a repellent with 20 to 30% DEET on skin or clothing, following the label.
- Stay in the center of trails and avoid brushing against grass and brush.
- Do not sit on logs or lean against trees in woodland areas.
- Check yourself, your children, and your pets during and after outings, including your scalp, behind your ears, and your legs.
- Shower within two hours of coming indoors, and run outdoor clothes in a hot dryer for an hour.
Pets are a common way ticks get indoors. Ask your veterinarian about tick prevention products, and see our guide to pest control for Fresno families with kids and pets for more on keeping pets and play areas safe.
How to Remove a Tick Safely
- Grasp the tick with fine tweezers as close to the skin as possible.
- Pull straight out with slow, steady pressure. Do not twist or jerk.
- Do not squeeze the tick’s body, burn it, or cover it with petroleum jelly or nail polish.
- Wash the bite with soap and water and apply an antiseptic.
- Note the date, and watch for a rash or fever over the next few weeks.
Remove ticks as soon as you find them. The California Department of Public Health notes that an infected western blacklegged tick must be attached and feeding for at least 24 hours before it can pass on the Lyme bacterium, so prompt removal makes a real difference.
How to Keep Ticks Out of Your Yard
About half of California’s reported Lyme cases are contracted around the home in semirural settings, so yard management matters most for foothill and rural-edge properties. Clear leaf litter, keep grass mowed, trim brush back from paths and play areas, and create a dry buffer of wood chips or gravel between lawns and wooded areas.
Rodents and other wildlife carry ticks into yards and under homes. Sealing gaps in foundations, vents, and crawl spaces is part of our full property protection service, which helps keep tick-carrying animals from settling in.
Regular preventative pest control visits can also help keep pests in check around your home’s perimeter, the area ticks and their wildlife hosts cross to reach your yard.
When to Call a Professional
Call a professional if you keep finding ticks on pets or people around your property, if ticks appear indoors, or if your yard borders woodland or brush. Brown dog tick infestations inside homes are especially hard to clear without treating both the pets and the indoor areas where ticks hide.
Our targeted pest control approach focuses treatment where ticks actually live, rather than spraying the whole yard.
FAQ
Should I get a tick tested after it bites me?
UC IPM does not recommend tick testing for medical decisions, because results take time and can be misleading. Save the tick if you like, watch for symptoms, and see a doctor if a rash or fever develops.
Can my dog get Lyme disease?
Yes. Dogs can develop lameness, lethargy, and loss of appetite. Ask your veterinarian about tick prevention products; Lyme vaccines for dogs are also available in California.
Can ticks live inside my house?
Most ticks do not survive long indoors. The brown dog tick is the exception and can complete its life cycle inside homes and kennels with dogs.
How long must a tick be attached to spread Lyme disease?
According to the California Department of Public Health, an infected western blacklegged tick must feed for at least 24 hours to pass on the Lyme bacterium. Other tick-borne illnesses can spread faster, so remove ticks right away.
Are ticks active in winter in the Central Valley?
Yes. Adult western blacklegged ticks in central California are most active from late November through spring, so winter foothill hikes carry real tick exposure.
Do ticks jump or fall from trees?
No. Ticks crawl. Adults wait on grass and brush tips, and nymphs wait in leaf litter and on logs, grabbing on when you brush past.
Get Help With Ticks in the Central Valley
Valley Wide Pest Control is a veteran-led company that has served the Central Valley for more than 20 years, with a pet-friendly approach to treatment. We serve Fresno, Clovis, Madera, Sanger, Selma, Kerman, Reedley, and Visalia. Call (559) 285-8181 or get a free estimate to protect your home and yard from ticks.