Most orange ladybugs in your home are actually Asian lady beetles seeking warm shelter for winter; they enter through small cracks, are harmless but can stain surfaces if crushed.

 

What Are These Orange Ladybugs?

 

These insects are commonly called Asian lady beetles. Unlike the familiar red-and-black ladybugs, they often have an orange or yellow shell with black spots. They are not native to North America but were introduced years ago to control garden pests.

 

Why Do They Come Inside?

 

• Seeking Warmth: As temperatures drop, these beetles look for a cozy place to spend the winter.
• Light Colors Attract Them: They are drawn to bright walls and sunny windowsills.
• Easy Entry Points: Small cracks around windows, doors, siding, or gaps in screens give them access.

 

Life Cycle and Seasonal Behavior

 

In late summer and early fall, Asian lady beetles fly toward warm, sunny walls. Once they gather in large groups, they squeeze through tiny openings to spend winter in wall voids or attics. In spring, they emerge to find prey such as aphids in gardens.

 

Potential Problems

 

• Staining: If crushed, they release a yellow-orange fluid that can leave stains on fabrics and surfaces.
• Odor: When disturbed, they emit a foul smell as a defense mechanism.
• Minor Nuisance: Large numbers can be irritating but they do not bite people or damage your home’s structure.

 

How to Prevent and Remove Them

 

• Seal Entry Points: Caulk cracks around windows, doors, pipes, and gaps in siding.
• Install Screens: Make sure window and vent screens fit tightly and have no tears.
• Use Light Traps: In attics or garages, light traps can capture beetles without chemicals.
• Vacuum Regularly: A handheld vacuum gently removes clusters; empty the bag or canister outside.

 

In Nashua and nearby regions, these beetles often appear in fall. By sealing gaps and using traps, you can keep your home beetle-free all winter long.