Asian Lady Beetles

What Is An Asian Lady Beetle?

Multicolored Asian Lady Beetles, also known as lady beetles and lady bugs, are smoothly oval in shape, with a convex body; 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, ladybugs vary in color and are often found in shades of tan and orange as well as red.

Why Do I Have Them?

Lady beetles are probably the most easily recognized of all insects. There are hundreds of kinds of lady beetles in the United States. Lady beetles are causing some concern among homeowners because of their sheer numbers. Accidentally introduced into the United States some years ago, these pests first started appearing in the Upper Midwest in 1998.  In 2000 they began invading houses in large numbers.  They start infesting homes and buildings in the autumn or fall months as they leave yards and other summer feeding areas in search of a warm place to overwinter.  These beetles are found to be attracted to sunnier areas and will congregate on the southwest sides of structure.  Attics, wall voids and other protected locations tend to be where they gather and they will gain entry through cracks around doors and window, behind siding and other areas that are susceptible to pest infestation. Lady beetles can fit through openings as small as 1/8 inch in size making homes and buildings easily accessible.

Are They Dangerous?

Although lady beetles can be a nuisance when they occur in large numbers, they do not infest wood, destroy fabrics, eat our food, or damage other property. Lady beetles cannot sting and they are not known to carry disease but they are a serious pest of soybeans in Midwest states

How Do I Get Rid Of Asian Lady Beetles?

Getting rid of lady bugs can be a difficult task as disturbing them will only cause them to secrete a strong-smelling yellowish liquid from the joints of their legs which can stain.  

Can I Do It Myself?

Controlling lady beetles using Do-It-Yourself methods does not prove to be effective in most cases and treatments may contain pesticides that can be harmful to people and pets if they are misused or mixed improperly.

How can I prevent this in the future?

Controlling lady beetle problems is a difficult task and, while sealing cracks and spaces around doors, windows and foundation is helpful, it may not completely deter these nuisance pests.