Tenodera sp. We only recommend their use for science projects, to introduce the wonder of insects to children. They eat whatever they run into including other beneficial insects. They are not an effective biocontrol agent for specific problems like aphids or scale. There are approx. 200 eggs/case. Cases take 2-4 weeks to hatch, depending on temperature. Use 10-100 egg cases/acre/yr., release in early spring. Only available Dec.-May. This is 7 cases. ***Out-of-state addresses must be shipped at least 2nd Day Air.***