Abstract Although the honey bee is a valuable pollinator and should be protected from pesticides, colonies must sometimes be destroyed because of infectious diseases. The greater wax moth causes considerable damage every year to stored combs. Also accidental introductions into the United Stares of the Africanized honey bee from South America may have to be eradicated. Tests were made in 71 -m3 trailers. Approximately 100 adult honey bees each in round 1-pt ice cream cartons that had the inner lids punched out and replaced with 25-mesh nylon netting were located in the center of the trailer. Bees were supplied with dry sugar cubes and a sponge with water before and after the test. Wax moth egg clusters (1-7 days old) were exposed similarly in 60-mm petri dishes. Insecticides were applied as aerosols or dusts. Aerosols were formulated with 50% Freon 11 and 50% Freon 12 and dispensed by an operator who walked the length of the trailer and moved the container from side to side. Actual dosage was determined by weighing the container before and after dispensing the aerosol. Dusts were prepared by dissolving technical material in methylene chloride to form a slurry with the carrier. Hi Sil 233, and evaporating the solvent. The formulations were preweighed and dispensed by CO2 gun by an operator standing at the entrance of the trailer. The average temperature during testing was 25° C.