A colleque asked me to post this to bee-l. Please reply directly to Don at the address below. AMMONIA AND HONEY BEES. A proposed indoor wintering facility wants to use the cooling capacity of an existing cold storage freezer that uses ammonia for cooling. Evidently small leaks in valves and fittings are common. Does anyone has information about the effect of ammonia on honey bees/bee colonies? Thanks! Send information directly to: [log in to unmask] Don Nelson, Visiting Scientist phone: (902) 679-5762 Agriculture and Agri-Food Canada Kentville Research Station 32 Main Street Kentville, Nova Scotia B4N 1J5