Use this trap any time beetles are present. However since Small Hive Beetles (S.H.B.) are temperature sensitive it will be far more effective during late spring to fall when beetles are out of the cluster and most active. Included with your Beetle Trap are wooden spacers needed to modify your bottom board, to allow the honey bees to enter and exit the hive while the when the Beetle Trap is in place. Only periodic cleaning of the traps is necessary. Directions for assembly and use are included with your Bottom Board Beetle Trap.