That's a tough situation! Merging a drone-laying hive with a weak one is risky, but understandable given your concerns. Your plan to use a strong-scented uniting spray is a good start. Maybe consider using a newspaper method in addition to the spray. It forces them to gradually mix and reduces immediate aggression. It's worked for me, though I did have one hive once where even my Granny would have been shocked by the bee fight! Good luck![/COLOR]