Orcon MASON BEE NEST (Contains 35 Nest Tubes and Mounting Bracket) - Case of 12Case of 12 The Orcon Mason Bee Nest (OB RBN35) is a kit that will help captivate beneficial bees to your valuable garden. It targets Blue Orchard Mason Bees (Osmia lignaria) that are known as excellent pollinators. Each one can pollinate 120 honey bees. Product will be perfect for the target insect because they are unsociable. Mason Bees do not make hives and just always look for a place to make home. They prefer a hole or tunnel that has been bored