David Cappaert , Michigan State University
Gary Alpert, Harvard University
Bumblebees
General Description
Bumble bees are robust, fuzzy yellow and black striped insects one-half of an inch to 1-inch long. Bumble bee
nests can contain around 200 bumble bees and are found in old rodent burrows, under porches, in wall voids,
landscaping timbers, piles of grass clippings and dense thatches of long grasses. Bumble bees can sting more
than once, and their sting is one of the most painful of North American stinging insects. Bumble bees are
beneficial pollinators and should be left alone unless their nests are in conflict with human activity.
General Control
If bumble bees nest in walls or other confined spaces of a building, they can be removed and the bees killed if
necessary. Nest cavities should be filled to prevent bees from using them in the future. You may want to seek the
assistance of a professional exterminator. Removing leaf litter and grass clippings as well as filling holes and
burrows so nests cannot be established will help prevent unwanted encounters with bumble bees.