Dogster is reader-supported. When you buy via links on our site, we may earn a commission at no cost to you. Learn more.

Dog Health & Care

When Is Flea & Tick Season? A State-by-State Guide (Vet-Verified)

Jessica Kim
By Jessica Kim · Reviewed & fact-checked by Dr. Lauren DemosVet Approved
Dr. Lauren Demos
Reviewed & Fact-Checked byDr. Lauren DemosDVM (Veterinarian)
As a veterinarian, Lauren is happy to share her rich experience in emergency medicine and cats, with our readers. She enjoys sharing helpful, real life tips for having pets as part of your life, and what to do in critical situations.View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Learn more
Updated on June 29, 2026
Share
dog scratching

Fleas and ticks are common pests that can irritate dogs and cause further health complications. Flea and tick season refers to times in the year when they’re most active. Different regions in the US will have flea and tick seasons that start and end in different months. Areas with warmer climates can also have year-round flea and tick seasons. Knowing when flea and tick season takes place in your state can help you better prepare and prevent infestations and keep your dog safe.

divider dog paws 2 oct 2024

What Is Flea and Tick Season?

While fleas and ticks can survive cold weather, they tend to be most active during the spring and summer when the weather starts to get warmer. These active periods make your dog more susceptible to infestations.

Fleas and ticks will become less active in the late fall and winter when the weather gets colder. Flea and tick populations in areas with cold winters usually enter a dormancy phase and resume activity in the spring.

Image Credit: jubatusdj, Shutterstock

Flea and Tick Season: State-by-State

Temperature plays a large role in flea and tick season. Warmer states can have year-round flea and tick seasons. However, most states have flea and tick seasons that start in March or April and end in September, November, or December.

Fleas and ticks are resilient and can survive without a host for a significant amount of time. So, there are no states with no fleas, but some states have very short flea and tick seasons. Here’s a general breakdown of flea and tick seasons for each state. Remember, fleas and ticks can be seen year round depending on seasonal variation, so this is a general guide, only.

Year-Round Season

  • Alabama
  • Arizona
  • Arkansas
  • California
  • Florida
  • Georgia
  • Hawaii
  • Louisiana
  • Mississippi
  • Nevada
  • Oregon
  • South Carolina
  • Texas
  • Washington

March to July Season

  • Utah
  • Wyoming

March to September Season

  • Colorado
  • Utah
Image Credit: MitchyPQ, Shutterstock

March to November Season

  • Iowa
  • Maryland
  • Massachusetts
  • Michigan
  • Missouri
  • New Hampshire
  • New Jersey
  • New York

March to December Season

  • Delaware
  • Kentucky
  • Ohio
  • Rhode Island

April to July Season

  • Montana

April to August Season

  • Idaho

April to September Season

  • Illinois
  • Indiana
  • North Dakota
  • North Carolina
  • Oklahoma
  • Tennessee
  • Vermont
  • Virginia

May to October Season

  • Alaska
Image Credit: BRS images, Shutterstock

Flea and Tick Prevention

One of the most effective ways to prevent flea and tick infestations is to stay on top of your dog’s flea and tick prevention medication. Prevention medication includes topical treatments, collars, and tablets.

Some dogs require flea and tick medication year-round, while others just need it during the spring and summer. It’s best to consult your veterinarian to determine the right regimen for your dog. Your veterinarian can also help you choose the best brand for your dog.

Since fleas and ticks hide really well in your dog’s coat, make sure to check your dog’s coat regularly during flea and tick season. Fleas and ticks can latch to any part of the body, but they tend to prefer areas with dense fur and deeper crevices, such as the neck fur, abdomen, and armpits.

Routine cleaning around the house and maintaining your yard can also help keep fleas and ticks at bay. Washing your pet’s bedding and vacuuming your floors regularly can help prevent flea and tick infestations. Mowing your lawn and keeping your grass at a shorter length can minimize flea and tick populations. These pests also prefer shady and humid areas, so make sure to pick up sticks and dead leaves and avoid overwatering your lawn.

Fleas and ticks can latch to small animals, so keep the perimeter of your house clean to avoid attracting mice, rats, and other rodents. Make sure your trash bins are shut securely, and don’t leave any food out.

Treating Flea Infestations

It’s important to act quickly with flea infestations because they can spread very quickly and wreak havoc in your entire house. Because fleas are so small, it’s likely you won’t notice them on your dog right away. The best way to spot fleas is to observe your dog’s behavior. Dogs with fleas often exhibit these signs:

  • Excessive scratching, chewing, or biting skin
  • Skin irritation or inflammation
  • Skin infections
  • Fur loss
  • Flea dirt

If your dog has fleas, consult your veterinarian right away. Your veterinarian can do a physical exam on your dog to check for any other health issues caused by the fleas. They can also recommend and prescribe flea medication that will help kill fleas.

You’ll also have to clean out your home thoroughly and consistently until it’s completely cleared of the flea infestation. This includes washing your dog’s bedding and soft toys with hot and soapy water. You’ll also have to wash any soft materials and decorations that fleas can hide inside, such as your own bedding, pillows, rugs, and bathmats.

Don’t forget to vacuum your floors, curtains, and upholstered furniture. You can use a flea control spray or powder before vacuuming to destroy larger flea infestations.

It’s important to keep cleaning until your house is completely cleared of fleas. Fleas can quickly bounce back and infest your home again if you don’t follow through on treating your house to the very end. If the infestation becomes unmanageable, it’s recommended to hire a professional exterminator.

Treating Ticks

Ticks can carry harmful parasites that cause serious illnesses in dogs and humans, so you must remove them right away if you see them on your dog. The best way to remove ticks effectively is to use a tick remover tool.

First, put on a pair of disposable gloves to protect yourself from contracting a transmittable disease. Then, use a tick remover tool to detach the tick from your dog’s skin according to instructions. You may need to enlist the help of another person if your dog isn’t staying still.

Get as close to the skin as possible and slowly yet firmly detach the tick from your dog’s skin. Working patiently will reduce the risk of the tick’s head detaching from its body. If the tick’s head gets stuck on your dog’s skin, you can try to remove it with tweezers. However, be careful not to cause damage to your dog’s skin. If it’s difficult to remove the head, contact your veterinarian for further assistance.

After you’ve removed the tick, place it in a container or baggy with isopropyl alcohol, which will preserve the tick. Disinfect the tick bite area and wash your hands thoroughly after disposing of your gloves.

Monitor your dog’s condition over the next few days and look for any strange signs or symptoms. If you notice anything strange, contact your veterinarian. Your veterinarian can examine your dog and check for any tick-borne illnesses.

Image By: Nick Alias, Shutterstock
divider dog paws 2 oct 2024

Conclusion

Flea and tick season varies from state to state, but most states have seasons that begin in the spring and end in the fall. Make sure to be extra vigilant during your state’s flea and tick season and check your dog’s skin and coat regularly for pests. If you find either of these pests on your dog, act immediately to remove them. Keep your veterinarian in the loop and schedule a visit with them if you notice any strange or unusual behaviors or signs from your dog.

Sources

Featured Image Credit: schubbel, Shutterstock

The Dogster Newsletter

Expert dog care, straight to your inbox

News, insights, expert advice, and everything dog.

No spam — unsubscribe anytime.

By signing up, you agree to our Terms & Conditions and Privacy & Cookies Policy.

Click a star to rate. You can leave written feedback afterwards. (We read all feedback.)

Jessica Kim
Authored by

Jessica Kim

Fleas & Ticks On Dogs in the Northwest: Vet-Verified Facts & Explanation

Fleas & Ticks On Dogs in the Northwest: Vet-Verified Facts & Explanation

If you live in the Pacific Northwest with a dog that loves nothing more than adventuring outside, you need to educate yourself on the dangers of fleas and tick…

Chantelle Fowler
By Chantelle Fowler · 3 weeks ago
Can Dogs Get Fleas in the Winter? Vet-Verified Facts & FAQ

Can Dogs Get Fleas in the Winter? Vet-Verified Facts & FAQ

If you were hoping for a flea and tick-preventative-free winter, you’re about to be disappointed. Though they are often considered just warm weather pests—and…

Kit Copson
By Kit Copson · 3 weeks ago
How to Remove a Tick From a Dog: Vet-Approved Step-by-Step Guide

How to Remove a Tick From a Dog: Vet-Approved Step-by-Step Guide

If your dog has a tick on them, it's easy to panic. These parasites can carry diseases and are simply unpleasant creatures to encounter. But having a dog means…

Adam Mann
By Adam Mann · 4 weeks ago
Can Dogs Die From Fleas? Vet-Reviewed Facts & Prevention Tips

Can Dogs Die From Fleas? Vet-Reviewed Facts & Prevention Tips

One of the most common health issues that dogs can experience is flea infestations. While these tiny pests may seem harmless, they can cause a range of health…

Nicole Cosgrove
By Nicole Cosgrove · 4 weeks ago

How to Prevent Fleas on Dogs: 15 Most Effective Vet-Approved Methods

Fleas are a scourge for pets and their owners, and sadly, 33% of pet owners say they don’t apply or give their animal companions flea medication regularly. Fle…

Chris Dinesen Rogers
By Chris Dinesen Rogers · June 29, 2026
How to Prevent Fleas on Dogs: 15 Most Effective Vet-Approved Methods

Are There Fleas in Arizona? Vet-Verified Facts & FAQ

If you’re a pet owner, you’re probably aware that fleas are stubborn pests that can make your animal’s life miserable. However, fleas also prefer a specific ty…

Elizabeth Gray
By Elizabeth Gray · June 16, 2026
Are There Fleas in Arizona? Vet-Verified Facts & FAQ

How to Get Rid of Fleas on Dogs & in Your Home: 8 Vet-Approved Tips

Getting rid of fleas is a two-pronged process. You have to remove fleas from your dog and your home. Otherwise, your dog will keep reinfecting in a never-endin…

Kristin Hitchcock
By Kristin Hitchcock · June 29, 2026
How to Get Rid of Fleas on Dogs & in Your Home: 8 Vet-Approved Tips

Do Dogs Normally Pick Up Fleas on Walks? Vet-Approved Facts & FAQ

According to Nationwide Pet Insurance, skin allergies are the top reason people take their dogs to the vet. One of the leading causes is flea allergy dermatiti…

Chris Dinesen Rogers
By Chris Dinesen Rogers · June 29, 2026
Do Dogs Normally Pick Up Fleas on Walks? Vet-Approved Facts & FAQ

The Hidden Risk in Tall Grass That Most Dog Owners Ignore

Finding a tick on your dog can look like a lot of things, depending on when you catch it. Some are engorged and clearly alive. Others are small, dry, and britt…

Dan Seymour
By Dan Seymour · June 17, 2026
The Hidden Risk in Tall Grass That Most Dog Owners Ignore

What Does a Tick Bite Look Like on a Dog & Next Steps to Take (Vet Approved)

Many dog owners are concerned about ticks and for a good reason. The tiny pests can attach themselves to your dog’s skin and put their health at risk. After ta…

Jordyn Alger
By Jordyn Alger · June 17, 2026
What Does a Tick Bite Look Like on a Dog & Next Steps to Take (Vet Approved)

I Found a Dried Dead Tick on My Dog - Should I Be Worried?

Finding a tick on your dog is always unpleasant, whether dead or alive. Dead and dried ticks can't actively transmit bloodborne illnesses to your dog, so they'…

Nicole Cosgrove
By Nicole Cosgrove · June 29, 2026
I Found a Dried Dead Tick on My Dog - Should I Be Worried?

How to Get a Tick Off a Dog With Dish Soap: 7 Vet-Approved Steps & FAQ

Ticks are a common worry for dog parents because of the diseases they can cause. These dark-colored bloodsuckers are also adept at hiding themselves in inconsp…

Nicole Cosgrove
By Nicole Cosgrove · June 17, 2026
How to Get a Tick Off a Dog With Dish Soap: 7 Vet-Approved Steps & FAQ

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.

You may opt-out at any time. View our Privacy Policy for more information.

The Dogster app on a phone