Positive Impacts

 Since this species is a generalist predator, it will feed on many insects besides aphids. Its diet includes larvae of rare butterfly species. Multicolored Asian lady beetles also feed on fruit and are known to damage apples in orchards by eating through the skins, thereby ruining much of the crop. These ladybugs will also feed on grapes, and often get mixed with grapes during wine production.

Adults are known to inflict a painful bite to humans. The inflammation from such a bite can last for days. The large numbers that invade houses in fall can be a nuisance, and many homeowners have attempted to control these insects. The fluid emitted from the leg joints when the beetles are alarmed can stain walls, paint, and fabrics. Large numbers of these beetles indoors can cause allergic reactions, such as difficult breathing, in some people.