The Hundreds of Ladybugs Trying to Get in Your Utah Home Are Actually this Dirty Look-Alike Bug

Since when did hundreds of ladybugs cram into your windowsill, biting and leaving a nasty yellow stain? Turns out these bugs aren't what you think. They are actually a look-like bug imported from Asia. 

How to Detect This Invasive Beetle 

The Asian lady beetle looks and acts like a ladybug most of the year. They eat aphids and other pestering bugs like the ladybugs native to Utah and North America. However, as fall turns to winter, they can become very unlady like. 

These beetles were introduced to North America for pest control but have become invasive. They are bigger than normal ladybugs and can have what looks like an “M” on the white area behind their head. 

When the Air Turns Cold Bugs Invade Homes for Warmth 

When fall begins and the air turns colder, they start looking for a warmer place and they do it in big numbers. They like to find slits, cracks, and crevices to spend the winter. They can congregate around windows and under siding. 

There can be hundreds that congregate around a crack. They do not like to be disturbed and will emit a smelly odor and leave yellow marks on your home surfaces. They will also give a mild bite if you try to remove them without gloves.  

Prevent Bugs from Coming Inside 

To prevent these beetles and other bugs from entering your home start by sealing any cracks around windows and your foundation. They are attracted to light so be aware of your outside lighting. 

Read More: Can Roaches Get in your Utah Home from the Drain?

There are natural oils you can use that create a barrier to these bugs. Orange and citrus can do the trick. Put it around areas where you find bugs trying to enter.