That's the main question Bruce, and I don't know enough about animal behavior to comment. If it did take extra work to convince them to leave I guess you'd have to contrast that with the service they provided. How hard might it be to remove several hundred ( or thousand maybe?) 12-15" LMB from a 7 acre pond? I've been suggesting a Bass-a-thon for a long time, but the man power just isn't there. Everyone in this area has a pond or two it seems and most of them are overrun with bass.