Pests We Treat - European Hornet's Nest in a Gap in Tree in Piscataway, NJ Right inside this opening in this tree, is an active European hornets nest. Related Content: Article: European Hornets: The Historic Stinging Insect Case Study: European Hornets Getting into the Bedroom in Mantoloking, NJ Press Release: Don't Let Pantry Pests Spoil Family Holiday Fun Back to Previous Page Back to Videos