Spring Cardboard BeeTubes and Inserts for Mason Bees—8 mm

Spring Cardboard BeeTube & Insert - 8mm. This is both the outer "guard tube" and insert. When combined, this protects the developing mason bee larva from parasitic wasps. Save 15% when you order in bulk quantity of 250. Specifications Spiral wound 3 ply cardboard outer BeeTube: 10mm OD, 8mm ID, 5 7/8" long Spiral wound glacine paper insert: 8mm OD, 7mm ID 6" long 36 or 250 count. Product Features Inserts easily fit within these 8mm inside diameter.  Thickness of both BeeTube and Insert stops most parasitic wasp attacks. 36 count is fine for about 40 mason bee cocoons. For harvesting cocoons in the fall, remove inserts and drop them into a bath of tepid water. Within 10 minutes the glue dissolves and the paper and cocoons are easily separated.  Follow other harvesting advice to finish cleaning and storing the cocoons. For DIY Bee Houses, ensure roof is a minimum of 3” longer than BeeTube & Insert.