Man your lucky! I've spent a few hundred dollars buying lacewings trying to get them established with very limited luck, if any.
I'm sure they are endemic to your area. Its just everyone is so quick to spray insecticides they may be at a low population level. I've heard that regular spraying causes more damage to the population of beneficials (like lacewing, ladybug, wasps, bees, assassin beetles, pirate bugs, ground beetles, etc.) than to the problematic species ostensibly targeted.