Multicolored Asian Lady Beetles go through a complete metamorphosis going from an egg to larva,to pupa, to adult. The most common place to find them during the warmer months of the year is in soy bean fields. They do however dwell among other vegetation such as tobacco plants, cotton, evergreens, apple trees and maples. Aphids are their main source of food and the average Asian Lady Beetle can consume 300 aphids before they reach the adult stage.
Usually in the fall of the year after the first frost of the year you will begin to see multicolored Asian Lady Beetles swarming during the day on the outside of houses and other outbuildings to warm their bodies after the cold night air. The south side of a house is particularly attractive to them during the fall months because it receives the most sunlight. Multicolored Asian Lady Beetles can and will migrate into wall voids and into the interior of a home. Once they have migrated into a home, control becomes more difficult and control options for home owners decrease.
Multicolored Asian Lady Beetles may pose a threat to the health of humans. They are known to bite and there are more and more reports of allergic reactions occurring after exposure to these beetles or after having been bitten by them.
Attempts to seal Multicolored Asian Lady Beetles out of a structure are not very effective. It may help to some extent to prevent them from migrating from the outside of the home to the inside. However, this can be extremely difficult, impractical and often ineffective due to their ability to find and enter the smallest of cracks. This method also will not resolve the nuisances that they cause on the exterior of a home and near common areas around the exterior of a home.
Pesticides are very effective for controlling Asian Lady Beetles and can be a more effective solution for the exterior of a home than sealing, and it can also prevent them from migrating inside. A pesticide application's effect is based upon a broad application of the pesticide to the exterior of a home. This is in many cases is difficult and expensive for a home owner to do on their own due to the lack of equipment and pesticide availability. A licensed pesticide applicator is trained and equipped to perform this task and will perform it within the legal guidelines for each individual pesticide. Pesticides do however have certain risks involved. Many of these risks make it more reasonable to have a properly trained and licensed technician/applicator perform the pesticide application because of their training and understanding of all the risks involved both to themselves and those who reside in the home.