Beware of insect imposters this fall because the Asian Lady Beetles will return this September. Bug experts say even though the lady bug lookalikes are a nuisance, they're harmless. But, if enough of them get out of control they can wreak havoc on unsuspecting homeowners. To avoid their wrath experts suggest caulking all openings and sealing up homes as tight as possible. The Asian Lady Beetles migrate toward homes in September and October, so provisions should be made by the end of August.