Is this an okay thing to do? AIBU to have a go if it's in his own garden?
I'm a bit conflicted as I have a live and let live attitude towards animals, but BIL swears it's not illegal to shoot them, that they're vermin and have chased off all our native red squirrels and that they're eating all the food he puts out for the birds.
He has tried other ways to get rid of them, but they are determined. My DS just shrugs and carries on with her knitting!