A Rat Investation

A ship has sunk by St. Kilda in Scotland. But this ship contained rats, and there are worries that they've got onto the islands. These islands are teeming with rare wildlife, from seabirds to mice & sheep. The rats might gobble on the chicks and eggs of the seabirds, making it even harder for them to breed.

Traps have been laid, but have all proven unsuccessful so far. I hope they save all of the animals, without harming any of them.

Please comment.
Thank you.