We have about a dozen bird feeders in our large garden and most of the dropped seed is cleared by pigeons and crows, but I've occasionally seen rats in the garden (and mice in the greenhouse and sheds), only to be expected in a rural village area. We also have night vision cameras in the garden which show that badgers, foxes, owls, bats and buzzards visit our garden. So I would never put poison down, especially as we have a very curious dog. I'm more of a live and let live sort of person. Rats are everywhere whether you live in the country or a city, we just have to find a way to co-exist with them.