In this study, I fed Podisus maculiventris (Say) (Hemiptera: Pentatomidae) and Coleomegilla maculata DeGeer (Coleoptera: Coccinellidae) different concentrations of purified Cry3Aa δ-endotoxin, the insecticidal protein expressed by NewLeaf™ transgenic potatoes. The maximum dose was 50μg Cry3Aa/g food for P. maculiventris and 200 μg Cry3Aa/g food for C. maculata. I found no effect on either developmental rate or survivorship for either species, even at the highest doses, strongly indicating that Cry3Aa poses virtually no risk to these predators. Frass from C. maculata in the highest dose treatment contained enough active Cry3Aa protein to cause significant mortality in early instar Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae) (Colorado potato beetle). Colorado potato beetle showed no significant mortality when exposed to frass from P. maculiventris in either the highest dose treatment or an additional treatment of 500 μg Cry3Aa/g food, although some mortality was observed when they ingested P. maculiventris carcasses from the 500 μg/g treatment. This suggests that P. maculiventris digests Cry3Aa, while C. maculata does not.