
Buying the bugs - at $16.50 (euro11.5) for 2,000 - means the complex's owner, Tishman Speyer, can avoid using chemical insecticides.
``In most cases, we reach for a can of pesticide - and we kill not only the 'bad guys,' but the 'good guys,''' said Eric Vinje, owner of Planet Natural, which supplied the pest-killers.
``All we're doing here is putting more of the 'good guys' to tip the scale, to get some kind of pest population control.''
He said a ladybug can eat up to 50 pests a day, plus insect eggs.