The nymphs and adults have piercing mouthparts which most use to suck sap from plants, although some eat other insects. When they group in large numbers they can become significant pests.
Stinkbugs normally appear during the spring and summer months.
During warm months, female stink bugs attach large masses of eggs to the underside of leaves and stems. After hatching, the wingless nymphs go through five immature stages before becoming full-sized, winged adults. Stink bugs are not known to bite humans but caution should be used when handling them to avoid a release of their odor.