Big Nesting Block of 20 one side milled MDF-boards. A simple system for opening the nests, harvesting the cocoons in winter time and to rebuild it for the next season. It has space for up to 2000 breeding cells.
Place the blocks on a rain protected, dry spot. They can be opened during the winter season to extract the cocoons from the boards and check them for ocurring parasites. Clean the boards afterwards before rebuilding the block for the next season.
Each board has 10 nesting holes with a diameter of 8 or 9 mm.
Dimensions: 16 x 16 x 38 cm.