Nice thoughts but we are the cause that they get over populated in popular river camps and at feature attractions. The same problem occurs with ants, mice, rattlesnakes etc. Traps are simply correcting our mistakes. While it would be nice to correct our mistakes and not feed the wildlife in the first place, that ain't likely to happen.All good advice except for placing/building traps. As rafters we are but tourist in their river world and we do live by the leave no trace mantra so live and let live... ...for all living creatures. Our actions is what attracts them and they shouldn't have to die because of us.