imo there is a difference between insects and mammals, i'd never hurt my cats for munching on fan leaves or killing seedlings. wouldn't shoot a deer that's killing my guerrilla plants either unless it's hunting season and he's fair game for food on my table. not that i could legally shoot anything in our local countryside without having a swat team descend on me. the point is, you have to react to pests as a grower, if you don't you won't be growing very long.