On either side of the solitary beehive are professional stackable beehive trays. These are secured using retractable threaded screws accessed via the lifting lid. The stackable trays allow larvae inspection for the purpose of monitoring and parasite control. The second precision drilled solid block provides maximum insulation for the overwintering larvae of the solitary bees. The third style nesting tube is provided by the 8mm cardboard tubes. Again another professional choice these 8mm tubes are designed to be replaced annually to prevent parasite build up. They may also be used in conjunction with professional paper insert so that inspection can be performed to a pro-level. The hinged woodpecker guard on the front of the beehive puts the solitary bee larvae out of reach of these greedy birds.