Ladybug, ladybug, fly away home, the nursery rhyme advises.
And some 72,000 ladybugs have found a home within the Mall of America, where mall managers have released the insects inside the fully enclosed shopping and entertainment complex.
The Bloomington, Minn., mall, which is so huge it could hold seven Yankee Stadiums, also has more than 30,000 live plants, including about 400 trees, which act as natural air purifiers for the indoor mall.
But aphids -- the pesky insects that feed on plants -- thrive inside the Mall of America's many landscaped areas.
Aphids, however, have a natural enemy: Ladybugs, members of the coccinellid family of beetles, which are valued by gardeners for their habit of eating pests like aphids.
"Ladybugs are what I like to call, sort of a biological defense system," Lydell Newby, the Mall of America's senior manager of environmental services, told local news station KARE 11.
The mall has released ladybugs in the past as an alternative to commercial pesticides, the International Business Times reports.