Lady Bugs In The House - Knowledgebase Question

Matteson, IL
Question by MWalczynsk
October 31, 1999
The lady bugs in our area are everywhere and they'r not the same usual ones. These are bigger, and an orange color. More agressive too. Where do they come from?

Answer from NGA
October 31, 1999


Ladybugs can be a real nuisance indoors! Your home has probably been adopted by the Asian Ladybugs rather than the native kinds. These imported ladybugs differ from the natives in that they prefer to hibernate on high cliffs instead of old tree stumps. Your house might be the highest place they could find in the area and they decided to hibernate under the eaves near the roof. As the weather gets progressively cooler, the ladybugs are drawn toward the heat escaping from your home. They manage to find tiny openings between the boards of the house and end up in wall spaces or attics. The warmth of your home tricks them into thinking it's springtime. Ladybugs are programmed to disperse when they wake up from their winter hibernation, and so they begin flying and crawling all around, in an effort to escape. The kindest thing you can do is collect them and send them outdoors. Either vacuum them up and empty the bag outside, or sweep them into a pile and toss them outside. There may be a few casualties, but the majority of them should survive the ordeal. There's really no way to keep them from coming in, short of sealing all of the tiny openings between the exterior and interior of your home. You're not alone, though. Many, many homeowners are invaded by swarms of ladybugs, especially in the early springtime.

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