Ladybugs, Asian Lady Beetles
In homes

As many homeowners are discovering, there is a big difference between the "garden variety" ladybug and the Asian Lady Beetle.  We are all familiar with the ladybug, considered to be a "good guy" since it feeds on garden pests such as aphids.  The Asian Lady Beetle poses problems that were unforeseen when they were first introduced in the United States.
These imports were supposed to give us a biological pest management tool, requiring less pesticide use in gardens, farms and landscaping.
This particular lady beetle (lady bug) differs in that it turns to our homes for shelter, invading living areas in very large numbers.

When first noticed, mechanical removal can often suffice as beetle pest control.  Small numbers can be captured and released outdoors where they can continue to protect our plants from aphids.  When the number of lady beetles in a home becomes high, vacuuming will be your best bet.
This article will deal with the severe or stubborn infestations that cannot be dealt with by using mechanical methods alone.

The best way to treat for ladybugs is to use the same methods and products used to control boxelder bugs.   Tempo WP is an odorless product which is labeled for  use indoors (if the need ever arose) and also on most shrubs and plants around your home.  If you only have the beginnings of a ladybug/ lady beetle infestation, you can get by with treating the interior and exterior of your home with Demon WP or Cyper WP.  These products will do a good job, but Cyper WP and Demon WP are  not labeled for spraying the wide range of shrubs and ornamentals, as is Tempo WP.
When treating, walk around the outside of your home twice: once to spray cracks, crevices, entry points and the second time to fan-spray any surface where they might crawl or come into contact with your product.  Any shrubs, small trees or bushes should also be treated as well as the ground around them and any mulched areas in your landscaping.
Although Tempo WP is safe to use indoors for almost any type of pest (when directions are followed), you should not have to in the case of ladybug
infestations.  Your vacuum will be your best tool indoors.
In severe cases, Delta Dust or Drione Dust should be applied to indoor
cracks, crevices, wall voids, hiding places and entry points.  Dusts should
be applied with a Crusader Duster. I prefer Delta Dust (because it is the
world's only water-proof dust) but either Delta Dust or Drione Dust will be
a good job, if dusting is necessary.
To help prevent infestations of ladybugs, treat the exterior of your home
with Tempo WP in the Summer, Fall and Spring. Each application will most
likely last between 4 and 12 weeks but for best results, try to time your
spray treatment with the normal time of year (in your area) when ladybugs
usually appear. One or two weeks before activity begins or at first sign of
ladybugs (or their larvae) is best.

Multi-colored Asian Lady Beetle (Ladybug)

The "multicolored Asian lady beetle"  or Asian Ladybug (Harmonia axyridis), has become common in many areas of the eastern United States.  This beetle is a beneficial inhabitant of the landscape but can also be a serious household pest in those areas where it has become well established and abundant.

The Asian ladybug is approximately 1/3 inch in length and semi-spherical or dome-shaped.  Their colorations can vary from yellowish-orange to red; deep orange is the most common color.  There are 19 black spots on the back that vary in darkness among individual beetles and the spots may be faint or missing on some beetles.   There is a black "W" shaped mark on the thorax of this ladybug.

Asian ladybugs, like boxelder bugs, pine seed bugs and elm leaf beetles, are accidental invaders; that is, "outdoor" insects that create a nuisance by wandering indoors during a limited portion of their life cycle.   Accidental invaders do not feed or reproduce indoors.  They cannot attack the house structure, furniture, or fabric.  They cannot sting or carry diseases.   Ladybugs do not feed on people, although they will occasionally pinch exposed skin. Ladybug may leave a slimy smear and they have a distinct odor when crushed.

Disclaimer
ladybugs  lady beetles