So a girl wants to kill the rat, and you're squeamish about it? Man-card revoked.
Just kill the damn thing. Poison, as was mentioned, might mean it will die and stink up the place where you can't get to it. Easiest, cleanest way is probably a trap. Or pull an Oscar and bash its head in with a bat/shovel/rock.
Just kill the damn thing. Poison, as was mentioned, might mean it will die and stink up the place where you can't get to it. Easiest, cleanest way is probably a trap. Or pull an Oscar and bash its head in with a bat/shovel/rock.