YOU WONT BELIEVE: Hhemming - You Need To See This

Here's Why You Should Eat Less Meat: A Visual Argument

This is a good point. Obviously this is a complex issue* and there is no perfect solution; However, some options may be better/more ethical than others. You might try cayenne pepper to get rid of rats and gophers. Alternatively, you could eat the rats and gophers (!) to make their deaths less wasteful.