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Saving the Rhino
The wilds of southern Nepal are home to some of the last remaining populations of the great one-horned rhino. But poaching remains a problem. In the poverty-stricken country, one rhino horn can mean a big payday. They fetch tens of thousands of dollars in places like China, where the horns are used in traditional medicine.
Ref. ABC Nightline
As long as poverty is high stopping poachers is extremely hard. Perhaps if they were shot on site it might damper the activity some but I do not think it would ever completely stop. Also they need to jail any one caught using or selling such a product. Hanging them would be better but unrealistic.