Lady Bugs can be found easily online. Here is a little info on them from one such site.
Live Ladybugs in mesh bag 1500 adults
[WRLBM]
$6.50
LIVE LADYBUGS (lady bug, convergent ladybug, ladybird beetle, Hippodamia convergens)
In stock and ready to ship!
Ladybugs are general predators that feed on a variety of slow-moving insects including aphids, moth eggs, mites, scales, thrips, leafhoppers, mealybugs and other slow-moving insects. Ladybugs are a must-have for organic gardening or organic farming. A ladybug (or lady bug) eats insects during both the adult and larval stages, so you can buy ladybugs as adults and continue to have live ladybugs eating through other parts of their life cycle as they reproduce. Adults are shiny, hemispherical beetles, often reddish-orange or yellow, with black markings. Larvae are black, with conspicuous legs and orange spots on their backs. The larvae are often compared in appearance to tiny alligators, and are similarly aggressive in consuming insects. The larvae move from plant to plant on leaves. Larvae pupate on the upper leaf surfaces, plant stems and twigs. Eggs are yellowish-orange ovals, laid on end in clusters of 10 to 50.
Release rates for live ladybugs:
500 square feet of planted area: 1500 ladybugs are generally enough.
For 10 acres with light to moderate infestation: One gallon (72,000) and up to one gallon per acre with heavy infestation.
Apply the live ladybugs to the infested area as soon after receipt as possible. Repeated releases (two to three times), a week apart, are recommended.