04/05/2026
You may have observed ladybug-like bugs gathering around your windows in the fall but did you know some of them can bite? These aren’t your friendly garden ladybugs. They’re Asian lady beetles, and while their bite isn’t dangerous, it’s adequate to raise fears for homeowners.
So what would you do if you’ve been bitten? More importantly, how do you remove these bugs out of your home for good? Let’s break down the facts and when it’s time to call an insect exterminator near you.
What Is An Asian Lady Beetle?
Asian lady beetles look a lot like native ladybugs but have a few key differences:
More orange than red, with varying black spot patterns
Often have a white “M” marking behind their head
Emit a foul, yellowish liquid when stressed
Known to swarm homes in large numbers in the fall
Initially introduced to help control farming pests, they’ve later became invasive in many U.S. states including Wisconsin.
Do Asian Lady Beetles Really Bite?
Yes, Asian lady beetles can bite, but it’s not what you’d call a serious bite. They don’t have venom, and their bite doesn’t cut the skin deeply.
Why do they bite at all? Mostly out of interest or when attracted to the salt or moistness on your skin. Most people sense a slight prick or irritation at worst. In rare cases, bites or the beetle’s secretions may cause minor allergic reactions such as itching, redness, or eye irritation.
So while it’s not hazardous, it’s still unpleasant and preventable.
DIY Ways To Keep Asian Lady Beetles Out
If you’re trying to keep these pests out of your house, here are a few real steps to try:
Seal entry points: Caulk cracks around windows, doors, and siding before fall.
Use citrus or citronella sprays: These scents are natural repellents.
Vacuum, don’t squash: Squashing them releases a strong odor and can stain surfaces.
Turn off outdoor lights at night: Light attracts swarms, especially in fall.
These approaches work best when started before the weather cools, which is when they begin looking for shelter in the house. The sealing of cracks around windows and doors as well as other entry points is key in having a few inside vs an infestation.