I read with interest your report on queen losses from formic acid, Kerry. Like inferior queens are not as well accepted as superior queens when introduced into a colony, it makes sense that the bees ball them more readily if a big disturbance happens to the colony. How frequent would you estimate such queen loss problems are when the treatment is aplied properly? I am curious. Concerning the building of emergency cells in presence of the queen, do you consider this as an important and frequent problem? I suppose it could be attributed to a masking effect of the formic acid on the queen substance?. Would the addition of a pheromone lure in the colony resolve the roblem? Would this situation occur only in presence of an inferior queen providing too little queen substance to its colony? Jean-Pierre Chapleau, queen breeder Quebec, Canada