Hornets & wasps should be eradicated by a pro such as me 20 plus years experience, i do this at night when they are all back in the nest using ultra violet and a camo bee suit keeps them happy until extermination using 100% organics, quick and no returned nests after! unless from a colony next door or distanced from your property ! Call doc! WARNING DO NOT KILL WASPS OR HORNETS BY YOURSELF, IF YOU DO PHEROMONE CAN BE RELEASED IF DIRECTION OF THE WIND BLOWS TO THE HIVE NEARBY YOU CAN END UP IN THE HOSPITAL OR WORSE, BAD IDEA , CALL DOC 604-379-7082 & Rodents & Bugs removed Organically!