How frequently should one check for queen cells?
Everytime you inspect the hive?
Finding queen cells doesn't always mean your bees are going to swarm. Bees will build queen cells all during the year. Make sure the bees are not over crowded and follow good swarm preventive measures and you should be okay. Steve
It is only usefull to check for queen cells in strong hives, during the swarm season. New swarms, new packages, and Weak hives with room to grow rarely swarm. These hives shouldnt be bothered too much, but very strong hives, with older queens, in spring and early summer should be inspected when the weather is good every 10 days, unless they are hanging out on the landing pad, clustering on the side of the hive, or otherwise are behaving strangely in which case they should be examined immediately. If you find queen cells in abundance, simply killing them probably wont prevent a swarm. You'll also have to give the bees more room by adding plain foundation to the brood nest, and possibly reversing supers, or adding supers, this gives the bees the feeling that they have swarmed, and that now things arent so congested. Good luck, regards, Paul.