Why is "driven" better than "kill"?
Some people think that killing rats is better than driving them away but this is not true. Experts have developed the “support theory”. They believe that in a certain space where there is some “support capacity,” if you kill one rat, there is another rat born. So if you use the ultrasound to destroy the rat’s life environment, then there is no support capacity and there will be no rats. Rats, cockroaches and other pets as well as mosquitoes are applicable to this theory. So it is better to drive away than kill.
Comments