got two inside/out female cats, big back yard, they like to hang on the back deck. lately 3 different cats have been fucking with them in our yard, chasing up trees, starting fights on our back deck, etc. our cats dont wander far, just immediate neighbors yards where there are no cats. we had a male cat that protected them & kept other cats at bay but he got killed by coyotes protecting his girlfriend. i'm thinking about buying a trusty red rider & shooting these fuckers, cheaper than a vet bill. any other ideas?