Stink bugs have glands in their thorax between the first and second pair of legs which produce a foul smelling liquid. This liquid is used defensively to deter potential predators and sometimes released when the bugs are handled carelessly.
The nymphs and adults have piercing mouth parts which most use to suck sap from plants, although some eat other insect.
During warm months, female stink bugs attach large masses of eggs to the underside of leaves and stems. The nymphs go through five immature stages before becoming full-sized, winged adults.
Stink bugs are known not to bite humans. If stink bugs released their odor, the odor can cause using to the eyes. If sprayed in the eyes, immediately flush the else with water and seek medical advice.