Hornets threaten tennis game in Wall Township, NJ

Tennis, anyone? Recently, I was sent to a country club in Wall Township, NJ that was having a wasp issue near their tennis courts. Fortunately, none of the members had yet been stung, and I was glad that I could remove the nest before anyone had an encounter with these stinging insects.  

Upon inspection, I found that a baldfaced hornet nest had formed on a nearby tree. A mature nest can grow quite large and house hundreds of wasps. Baldfaced hornets are a close relative of yellow jackets, and they are just as aggressive and territorial. These wasps are readily identified by their white markings on their face and abdomen. They commonly build their nests off tree limbs, but we also find them attached to homes and other structures. 

Like all social wasps, they aggressively respond to their nest being threatened. Before starting treatment, I alerted a pair of players in the court that I would be treating the nest and they may want to consider a brief delay of their match. They wholeheartedly agreed! 

I treated the nest from a safe distance, first using an aerosol to knock down the population before removing the nest. Once I observed that there was no more wasp activity around the nest, I removed it from the tree, and bagged it so I could take the nest with me. I thanked the players for their delay of game, and with the nest removed, their match could continue without these stinging spectators nearby.