Cicada Killer??

Asked July 30, 2020, 3:07 PM EDT

I found a large pile of sand alongside my concrete driveway. It was under some evergreen hedges that grew a long the driveway, and it was not readily visible. The sand pile was was maybe 3"-4" high and about 12-14" diameter. I have used axle grease successfully on carpenter ants in the past, but I couldn't put that down the opening I found. So I poured about 1 1/2 qts of heavy motor oil down the hole. The next day I found a dead bug at the whole opening. It was very large - maybe 1 1//4 inch long and as big around as the end of my little finger.

I have been told by some friends that it was probably a Cicada Killer. Do you think that is right? What else could it be? Do you have any suggestions on what else I might use to permanently kill any other bugs that are in that hole? Thank you.

Saginaw County Michigan

1 Response

Based on the sand piles and size of the insect, it is most likely a cicada killer. In the future, I would advise against pouring motor oil down a nest hole, since this can cause chemicals to leach into the soil or groundwater. Only 1 wasp nests in each hole. If you can tolerate a large buzzing wasp, there's no reason to control a nest that is not causing damage to lawn. These wasps are large but not aggressive and are searching for a cicada to bring to their nest rather than a human to sting.