Yellowjackets are predaceous and can be a problem in some areas. EB1477 "Protecting Honeybees Against Yellowjackets" is $.50 From Bulletin Office Cooperative Extension Cooper Publications Building Washington State University Pullman, Wa. 99164-5912 My catalogue is 1992. Conceiveably the price has gone up to cover cuts and reductions. Please write to the publications office directly. I'm not in a county and don't have access to the bulletins. (not even my own copy. I believe the late and greatly missed Dr. Roger Akre, wrote this one, but Dr. Daniel Mayer may have also.) I had a beekeeper in a volunteer group that was trapping yellowjackets for a study. He used the traps we made to lure the yellowjackets and said it worked well to keep the yj's out of his hives. There are a number of traps on the market. The ones we tried did not work as well as the ones we made even when we baited them with the same attractant (hepyl buterate - a fruity smelling liquid). I would recommend you borrow and test. also you can make a reasonable trap by cutting off the top of a plastic liter pop "bottle" and invert the cone into the bottle. Put in salmon cat food. YJ's are fussy eaters and food should be fresh. Of course shrimp, chicken and boiled ham also are good. YJ's fly up, so tilt the cone so they fly into it and they will keep trying to get out the top. Oh. Poke some holes in the end where the catfood is so the smell can get out. And if you can make the opening smaller (about pencil diameter) it is even better. Like any good experimenter. have a control and keep notes on your experiments and good luck. SHARON J. COLLMAN W.S.U. COOPERATIVE EXTENSION URBAN IPM RESOURCE CENTER @ CENTER FOR URBAN HORTICULTURE UNIVERSITY OF WASHINGTON GF-15 SEATTLE, WA 98195 PHONE: 206-543-8616 E-MAIL [log in to unmask]