A beehive comprises: (i) an exterior wall, (ii) a hive interior, and (iii) an entrance through the wall that allows access and egress of bees to and from the hive interior; wherein the hive further comprises (iv) a beehive entrance tunnel having a proximal entrance end at the hive entrance and a distal exit end that extends into the hive interior, wherein bees enter the beehive by proceeding along the tunnel; wherein in use of the hive the tunnel is sufficiently elongated that when host bees are present invading pests, e.g. bees or wasps, entering the beehive via the tunnel encounter host bees in the tunnel resulting in attacks in the tunnel by host bees on the invading bees or wasps. Existing hives are modified so as to have such an entrance tunnel.