It is not easy to solve in elegant and simple way a “rat problem”. Here comes engineering geniues and in simplicity of action. As many other professions engineers do not like to have a blood on the hands and toxication or strong harmful and paint-full to animal traps are not causing to exercise our humanities.
Very creative engineer from China decide that killing other been no-matter if invited or not are not good for his ego. There are other ways to catch and move poor and always hungry life forms. Take a look at video and find out why is so difficult to catch a smart rat without causing him any damage.