Cat Piss.

Hate cats - to me they are worthless - Except my wife has 4 and she loves them and they love her. I only feed them in the morning. I don't scratch them and they don't ask me for anything. We live in a scarcely populated canyon so every corner is sprayed by the cats every night, the neighbor cats come over. Once we had a squirrel population of 24+ that ate everything including the roots of the rose bushes, they disappeared when my wife got cats. Works for me.