>> For some years I have tested a system of requeening with ripe cells. > I wish I could trust this system. Others have told me about it >but it didn't work well for us. Two years ago I marked 20 queens in three >yards and gave each a ripe cell. Several days later I checked each hive Vince, What time of year did you try? I'm doing it at the time for swarming, or just after. That's when the bees are prepared for a new queen in the hive. The time for superseedure normally comes a few weeks later and some hives have both queens side by side until they throw out the old queen. I would not try spring or autumn without removing the old queen first. Also with bad weather the success rate will go down. regards P-O