How to Get Rid of Ladybugs
Ladybugs are beneficial insects. They feed on aphids, as well as other plant-damaging bugs and are symbolic of good luck for many people. They are also occasional house invaders and can become a nuisance to many homeowners.
To get rid of ladybugs in the house, it's important to try and find the point of entry and seal it. Lady beetles will typically seek shelter as temperatures begin to cool. Because of this, they are also known as an overwintering pest that will usually fade with the season, as they are unable to sustain life inside of a home. This is because they require humid environments to survive. During the transition from fall to winter, their presence increases as they prepare for hibernation.
Ladybugs are best controlled through exclusion, or the proper sealing of cracked windowsills and doorframes around the home. Heavy ladybug activity may be directly related to aphid populations (tiny plant eating insects) around the property - outdoors, aphids can be identified by their waste, a sweet black substance left on plants known as honeydew, commonly found on gardenias (a popular plant in the southeast). They will enter the homes through window screens and poorly sealed doors, but pose no threat to the property itself.
One test you can do to see if ladybugs are entering through the doors is to close them until they're completely shut. If you can see any daylight coming through on the sides or the corners, then the door is not properly sealed and should be refitted with bigger weather stripping. Cracked wood and windows should be caulked as well.
If using a labeled pesticide in place of sealants and stripping, apply product of choice along the door frames and windows. Windows you are unable to reach from the outside should be opened from the inside and treated where appropriate. Glue traps should be used in combination at the base of garage doors or anywhere else you suspect as a point of entry.
Ladybugs have a hard time regulating their body temperatures. Using the sun to maintain a sense of direction and comfortable body temperature, ladybugs are often found dead in low hanging lights and along windowsills. On the outside of the home, groups of ladybugs can be found orienting themselves around the sunniest side of the home. In some cases, light traps can be used to redirect or eliminate ladybug infestations.
When threatened, the ladybug will release an odorous yellow substance as a defense mechanism; this is actually their blood, and may stain walls and other household surfaces. They are completely harmless and they do not bite. Using a vacuum or paper towel and bag, try and gently collect as many as you can and release them.