John asks why not just put a 1/8" screen on the bottom of the hive instead of having a separate piece of equipment: 1. Would not be able to reverse hive bodies 2. Would have less flexibility in interchanging equipment Otherwise, would work just fine. However, I would use 3/8" mesh, instead of 1/4" for the entrance area. I've never found a mouse that can get through 3/8" and bees go through 1/4" very slowly. Lloyd Mailto:[log in to unmask] Lloyd Spear Owner, Ross Rounds, Inc. The finest in comb honey production. Visit our web site at http://www.rossrounds.com.