Jerry Bromenshenk wrote: > All > > We're developing a new product that will incorporate a varroa screen. > I'm looking for sources of screening materials, want to identify the > best product, looking worldwide. We converted to mesh bottom boards in 1998-2000 using a 1/8 inch polyethylene mesh we had on hand for catfish fingerling cages. It is easy to work, cuts with a knife, can be stapled on, cheap (about $1 per bottom board, last I looked), and durable. No danger of cutting yourself on it either. We staple it on from the inside, tho it can eventually develop some slack if you need a perfectly flat surface. The percentage of open space is better than some other products. Drawbacks are that it will tear if you drop the corner of a box, or something similar directly on it, and mice could eat through it, though here in piedmont SC that has not been a problem. Even when torn it still is effective for varroa, but no longer bee-proof for moving. I have seen adult small hive beetles try to go through it and fail. There are a number of suppliers. I have used Memphis Net and Twine, where it is code PN1, single rolls for $26.45 US for 36 inch X 50 foot rolls, plus shipping. Shipping weight is 12 pounds, another bonus. Not for everybody, probably, but most of our beekeeping association use it and are happy with it. The following is the Memphis N&T page for it: http://tinyurl.com/7sutl Carolyn Ehle Lakelands Beekeepers Association Plum Branch, SC -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---