As the season changes from summer into fall, insects adapt to prepare for the winter. Ladybugs are no exception. They are searching for a place to hibernate. Most often this is noticeable after a cold snap in the warmth of the afternoon sun. Most people know they are beneficial insects outside, and they are a good gardening partner. But they are a nuisance if they want to be “roomies”.
It is important to remember that although the ladybug is not the homeowner’s choice of accessorizing, they do not carry diseases, feed or reproduce inside, nor do any structural damage. Use of any kind of insecticides is to be avoided. Aerosols can create air quality concerns and do not prevent new ladybugs from entering the home. So here are a few spot on tips to help manage this uninvited guest:
- Be careful in handling the insects as they give off a defensive chemical which does have an offensive odor to it. Remember to wash your hands afterwards as well.
- Prevent the ladybugs from entering your house by making sure windows are sealed well, all damaged screens are repaired, cracks in siding and trim are sealed with caulk, and vents are covered with number 20 or smaller screen mesh.
- Sticky fly paper can be used to trap the beetles and then thrown away.
- Use a vacuum to collect them and change the bag after every use.
- To help the ladybug you can gently sweep them up and put them outside in a rock or wood pile to hibernate over the winter. For those up to the challenge, they can be collected in a paper bag, and stored in the refrigerator until spring. Then they can be moved outside to your garden and be the beneficial insect they are supposed to be.
For more information, the Penn State Master Gardeners have a fact sheet on the ladybug so please call 570-963-6842 to request it or send your request to our email address: LackawannaMG@psu.edu.
Steve Ward
Master Gardener Coordinator
Penn State Cooperative Extension in Lackawanna County
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