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These are the fifteen most common pests in Wisconsin:

  • Carpenter Ant

  • Color: The common western species of carpenter ants are dull black in color with reddish legs and golden hairs covering their abdomens. Other species are black, a combination of red and black, or completely red or brown.

  • Characteristics: Carpenter ants don’t eat wood like termites. Instead they push the bits of sawdust called frass out of the tunnels they create.

  • Size: Worker carpenter ants vary in size, ranging from 1/8 of an inch to 1/2 an inch long. The queen carpenter ant can be up to 5/8 of an inch long.

  • Potentially Dangerous: To property, not people.

  • Bed Bugs

  • Color: Amber to reddish, depending on how recently they’ve fed.

  • Characteristics: Broadly oval and flat.

  • Size: Adult bed bugs measure 3/16 inch long which is approximately the size of an apple seed.

  • Potentially Dangerous: No

  • Boxelder Bugs

  • Color: Black with three red stripes and red lines on the edges of their wings that look like an upside-down V.

  • Characteristics: Elongated-oval and somewhat flattened. Their head is narrower than the pronotum.

  • Size: Adults are typically ½ inches in length.

  • Potentially Dangerous: No.

  • Flies

  • WHAT ARE FLIES?: There are many types of flies that affect our area, the two most common are the fruit fly and the common house fly. Other species include: phorid flies, fungus gnats, drain flies, bottle flies and cluster flies. Flies breed in animal waste and decaying organic material from which they can pick up bacteria and viruses that may cause human diseases. Small fruit flies are about 1/8 of an inch (3-4 mm) long, including wings. House flies are about 1/8-1/4 of an inch (4-7.5 mm) long and the female is larger than the male

  • Mice

  • WHAT IS A MOUSE?: The house mouse is light brown to gray in color and reaches 3 1/2 inches in length; it’s tail can be as long as it’s body. The house mouse has a pointed nose and large ears. Mice are a type of rodent and are characterized by having two incisors. These teeth must be kept short by gnawing as they grow continuously.

  • WHY DO I HAVE THEM?: Mice can enter a home or building through a crack as small as 1/4 of an inch. Although it is more common to find them nesting and living outside, they have been known to stay in buildings and properties if there is enough food and water as well as conditions that are ideal for nesting.


  • Color: They have long and coarse fur that is usually blackish brown to grayish brown.

  • Characteristics: Meadow voles, also sometimes called meadow mice or just plain “voles”, are small mammals, They have a compact and fat little body with short legs and a short furry tail, small eyes and partially hidden ears.

  • Size: Meadow voles are usually between 5 inches and 8 inches long, including the tail.

  • Potentially Dangerous: No

  • Asian Beetles

  • WHAT IS AN ASIAN LADY BEETLE?: Multicolored Asian lady beetles, also known as lady beetles are smooth and oval in shape; they have a convex body and they may or may not be marked with spots, but all have a black “M” or “W” marking on their pronotum, the shield that hides their head. While mostly known for their red coloring and black spots, lady beetles vary in color and are often found in shades of tan and orange as well.

For more information on the following Pest Issues, Contact us Today!

  • Pavement Ant
  • Stink Bugs
  • Carpenter Bee
  • Rats
  • Box Elder Bugs
  • Sugar Ant
  • Bald-Faced Hornet
  • Paper Wasp
  • Yellow Jacket
  • Ticks

If you live in Wisconsin, chances are you've had more than a few encounters with these bothersome and potentially dangerous pests. Wasps, hornets, and even certain species of ants can aggressively claim their territory with painful stings and bites, while pests like flies, mice, rats could are carriers of filth and disease. If you've seen any of these insects or vermin in or around your home or business, contact Badger State Pest Services LLC today to learn how we can get these pests off of your property and ensure that they never come back.