Are There Ticks in Wisconsin? A Guide to Wisconsin Tick Species

Ticks are prevalent across North America and many types are not very selective about their hosts, feeding on a variety of animals from reptiles and birds to mammals, including humans. For those spending ample time outdoors, understanding the ticks in your area is crucial to safeguarding your health.

Does Wisconsin Have Ticks?

Yes, Wisconsin is home to several tick species, as is typical across North America. Given the diversity of tick species globally and in the United States, it's expected to find a variety of these ectoparasites thriving across the state.

How Common Are Ticks in Wisconsin?

Ticks are commonly found throughout Wisconsin. They are prevalent in wooded areas, tall grass, and brush, along roadsides and walkways, waiting to cling to people and pets just passing by. The density of tick populations can vary, but they are a notable concern, especially in areas with dense vegetation.

Types of Ticks in Wisconsin

Understanding the types of ticks present in Wisconsin is important for both outdoor enthusiasts and pet owners. Here’s what you need to know about the most common tick species in Wisconsin:

Blacklegged Ticks

Also known as deer ticks, the blacklegged tick is notorious for its ability to transmit the germ causing Lyme disease. All ticks come in small, medium, and large lifestages but blacklegged ticks in each of their life stages tend to be smaller than other types of ticks. The adult female is about the size of an apple seed, and has a black and red body. The middle stage, called the nymph, is the size of a poppy seed. Blacklegged ticks are found in wooded, high-grass, and even residential areas throughout Wisconsin. Nymphs are active from May through August, and the adults are active in the Fall and Spring. Their presence is a significant concern for Lyme disease transmission. Their small size makes them difficult to detect, emphasizing the importance of thorough tick checks after outdoor activities.

American Dog Ticks

Found in grassy areas, the American dog tick is common across Wisconsin. These ticks are larger than blacklegged ticks, about the size of a sunflower seed, and have a mottled grayish-brown body. They prefer edges of woodlands, roadsides, and even more open parklands; they are often encountered on trails and walkways. While they can transmit Rocky Mountain spotted fever, they are more commonly associated with tularemia in Wisconsin, though such cases are rare. Their size makes them somewhat easier to spot compared to smaller tick species.

Lone Star Ticks

Less common in Wisconsin, the lone star tick appears to be moving into Wisconsin from the south. This type of tick can be found in certain areas, particularly where dense undergrowth is present. The adult female stage lone star tick is easily distinguishable by the single white dot or star in the middle of its back. These are very aggressive ticks and their bite is associated with development of alpha-gal syndrome, a red meat allergy, in some individuals. They do NOT transmit Lyme disease germs, but can spread other serious illnesses such as ehrlichiosis. Their distinctive marking and aggressive nature make them a notable species for residents to be aware of.

When Is Tick Season in Wisconsin?

Tick activity in Wisconsin peaks from May through July and October through November. However, residents should be vigilant year-round, especially during these months when ticks are most active.

Staying Safe From Ticks in Wisconsin

Preventing tick bites is a critical step in safeguarding against the diseases they can transmit. One effective method is to wear clothing treated with permethrin. This treatment can be applied to clothing and gear, where it remains effective through several washes and acts as a deterrent against ticks by incapacitating or killing them on contact. Alongside treated clothing, it’s wise to wear long pants, long-sleeve shirts, and closed-toed shoes when venturing into areas known for ticks. Tucking pants into socks can further prevent ticks from accessing skin.

Another key strategy is performing thorough tick checks on your clothes and body after spending time outdoors. Using a full-length mirror can aid in inspecting hard-to-see areas, and it’s advisable to ask a friend or family member to help check places like the back of your head, neck, and other areas you might not easily see. Showering soon after being outdoors can also help wash off unattached ticks and provides a good opportunity to perform a detailed tick check. Regularly checking pets and cleaning gear are also important steps in a comprehensive tick prevention strategy. Awareness and proactive measures can significantly minimize the risks associated with ticks, protecting your health and that of your loved ones.