Exterior entryways:All exterior doors shall be designed to exclude direct entry into food production areas. Where this design is not possible, the door is to be kept closed during food production times and alarms may be used if possible.All doors shall be designed so that they do not open to the inside and shall be equipped with a self- closing device.All doors shall be designed so that they can be tightly closed on all sides to prevent the entrance of insects, birds, and rodents into the facility.