I removed 362 bullheads last summer from my 2/3 acre pond. It was a combined effort of hook and line fishing and individual traps. I purchased 2 traps for around $80 each from Aquatic Ecosystems and am very happy with them. It never seemed to matter much if I baited them or not. I can catch a lot more bullheads in a day by hook and line but the traps are a lot less trouble and don't hurt my yellow perch when they get in them. Just be sure to check them often because I let them go a week one time and had dead perch in them. I assumed they starved.