Asian lady beetles range in color from yellow and orange to black. Some generally males may not have spots while others could have up to 22 spots. They are commonly referred to as "Halloween beetles" for their coloring and tendency to invade homes during the month of October as they seek shelter for winter. Asian lady beetles are not considered to be dangerous, but they can be a nuisance. They can especially become problematic when invading homes in very large numbers.
Koch and W. Hutchison Department of Entomology, University of Minnesota. It has been debated whether MALB arrived in the United States through intentional releases for biological control or through accidental seaport introductions. MALB was first detected in Minnesota in In its native range, MALB is a known predator of aphids and other soft bodied insects. Unfortunately, MALB, like many other exotic insects, may also have adverse impacts on humans and the environment.
Outdoors, Asian lady beetles helpfully feed on plant pests like aphids and many others. From September to November, they move indoors to overwinter, crawling along windows and walls. Small cracks around windows and door frames provide entry points.
Once ladybugs have become established in the home, the treatment options are limited. The easiest way to remove ladybugs, once they are indoors, is with a vacuum cleaner. D-fense SC with deltamethrin is a long residual insecticide and does not break down easily outside on wall surfaces.