Fall Pests

Video: Matt Frye offers tips to prevent invasion of mice and overwintering pests into homes during the fall. 

Pest Exclusion

Avoid problems with animals in your home, school or office by preventing them from entering in the first place.

Common Fall Pests

brown shield shaped bug

In the fall, brown marmorated stink bugs gather to find protective winter habitat and find their way into wall voids around windows, doors, outlets, light fixtures, and air conditioners.

several boxelder bug life stages grouped together

Boxelder bugs are one of the many pests that come in on a potted plant, or through a crack, an open door, a hole in a screen, or a piece of firewood.

grayish fly

Cluster flies do not feed or reproduce indoors, but cluster in protected areas, especially attics.

red beetle with black spots and a white and black head

Multicolored Asian ladybeetles gather in large groups in the fall, and tend to invade buildings for overwintering where they find gaps and holes in structure, around eaves, windows and foundations.

a tick attached to skin

Ticks are still active in fall. Adult ticks are out looking for a fall feast in preparation for winter. Because they've fed a number of times at this point in their life cycle they are more likely to be carrying diseases.

a reddish brown true bug

Western conifer-seed bugs (WCSB) are overwintering pests that live outside during the summer and feed on pinecones. In the fall, they enter structures for protection against the cold and desiccating wind.

a group of bats resting on a wall

Beginning in the spring and into the fall, both little brown bats and big brown bats have “maternal roosts” consisting of females and the young-of-the-year congregating in the warm upper sections of buildings.

mouse in leaves

Peromyscus mice spend most of their lives outdoors foraging on natural food sources, but in the fall, they will enter buildings to find a suitable place to nest, and protect themselves against cold temperatures.

snake in a wood pile

Snakes inside buildings are usually the result of seeking locations for winter hibernation or pursuing prey, such as mice. But they can’t get in unless there’s a hole for them to enter through.