Asian lady beetles are common fall invaders, searching for a sheltered place to spend the winter. Mid- to late October usually signals the beginning of this invasion. There is no "magic solution" to this problem. First, follow some basic pest-proofing steps (caulking, repairing screens) in mid-September to keep as many out as possible.
Fast-acting, residual formulations of some insecticides can be applied around eaves, attic vents, windows, doors, siding, and other likely points of pest entry. The key is to initiate such treatments in late September or early October before the beetles enter buildings to overwinter. Contact your local Cooperative Extension office for insecticide recommendations. Once the beetles are indoors (i.e., winter/early spring), such treatments are ineffective.
A vacuum cleaner is the easiest way to remove ladybugs indoors. A broom can also be used to remove beetles indoors but is more likely to cause staining. The orange-colored fluid that the beetles secrete when picked up or disturbed is harmless but will stain walls and other surfaces. Aerosol bombs or pest foggers are not very effective against these insects, and label directions should be followed very closely if used.
