This is what i use inside my electric fence (sweet corn field ). I buy those alum. foil pans at the dollar store 2 to 3 in. deep by 8 by 10 in. or what ever size you want, i mix Golden Marlan fly spray (granules) with milk and pour it into the pan and place it on the ground in my corn field. When the milk starts to sour it draws the beetles by the hundreds and they will fill the pans up. A WORD OF CAUTION don't put it where your dog or cat can get into it, it will kill them, i have 20 hives within 100 ft. of my corn field and have never seen a dead bee in the pan. I also put this mixture on top of the brace post in my tame blackberry patch ( i make a box to set the pan in and nail it to the top of the post). The bad part is you have to empty the pans and refill every 3 or 4 days and boy do they stink.I've filled five gallon buckets full of dead beetles. :mrgreen: Jack