This is a critical point in this discussion, as well as a costing issue.
Despite hundreds of thousands of pounds and countless man hours in development and testing new designs very little has moved forward in the past 50 years. But then, not much moved on before that either, if you look back in history. Catching animals in traps is an emotive issue, and it will continue to be in the future, and this affects the task of development and use too.
One thing is certain - one type of trap will not be able to do the job in every situation, it is just not possible. But, it would be good to bui