We used to have a neighbour a few doors away - actually a nice old boy but totally deluded - who liked to "do his bit for the food chain". Each day he would smother his lawn with stale bread, nuts and any food Malcolm, his cat, hadn't eaten. He stood outside, arms outstretched, waiting for pigeons to descend on him Francis of Assisi stylee. The food would never be finished but would attract rats from the playing fields behind us then Malcolm - a feisty fellow - would chase and invariably kill them.
The neighbour, I'll call him John because that was his name and I know you are all pretty discreet, would hang the corpses of said dead rats along his fence for the foxes. He refused to listen to all reasonable argument and only stopped this hideous practise when someone involved the RSPCA.