At a Cal State research lunchon a few years back, the program was about chemical residue in wax and it's effects on queens and drones. The research showed that chem residue caused queens to supersede and drones to shoot blanks. Some folks in the audience were refuting much of the data. It was suggested that queen producers ( lots of them in the audience ), should have their combs tested. Supersedure is a major problem now. Is there a link? I know for a fact that getting 100 bad queens sure ruins your day.