wax by workers deputized to do this. Sealing prevents absorption of moisture from the air. Drone feeding Drones do not feed themselves when they are young; they are fed by workers and then when the drone bees get older they feed themselves from the honey supply. Queen Attendants (days 7-11) Queen attendants take care of the queen by feeding and grooming her. Yet, even more important is their incidental role in spreading queen mandibular pheromone (QMP) throughout the hive. This is a pheromone given off by the queen. After coming into contact with the queen, the attendants spread QMP throughout the hive, which is a signal to the rest of the bees that the hive still has a viable queen. Honeycomb building Workers will take wax from wax producing workers and build the comb with it. Pollen packing Pollen brought into the hive for feeding the brood is also stored. It must be packed firmly into comb cells and mixed with a small amount of honey so that it will not spoil. Unlike honey, which does not support bacterial life, stored pollen will become rancid without proper care. It has to be kept in honey cells. Propolizing The walls of the hive are covered with a thin coating of propolis, a resinous substance obtained from plants. When workers add enzymes to the propolis, the combination has antibacterial and antifungal properties. Propolis is placed at the entrance of hives to aid in ventilation. Some bees add excess mud to the mixture, making it geopropolis, such as in the bee Melipona scutellaris. Geopropolis displays antimicrobial and antiproliferative activity and has been proven to be a source of antibiofilm agents. It also presents selectivity against human cancer cell lines at low concentrations compared to normal cells. Mortuary bees Dead bees and failed larvae must be removed from the hive to prevent disease and allow cells to be reused. They will be carried some distance from the hive by mortuary bees. Fanning bees Worker bees fan the hive, cooling it with evaporated water. They direct airflow into the hive or out of the hive depending on need. Water carriers When the hive is in danger of overheating, these bees will obtain water, usually from within a short distance from the hive and bring it back to spread on the backs of fanning bees. Guard bees Guard bees will stand at the front of the