Befriend him, when I was in my 20s my house had no food but all booze and we had this cool mouse live with us, we would put out some snacks for him where we knew he was getting in, he used to sit and watch tv in my housemates room with him.
He wasn’t worried about us after a while and I never saw any others come in.
Woops, I clicked the dystopia setting instead of the utopia one.