I have recently adopted a lovely rescue cat (neutered, male) who's friendly, curious and a real wanderer - also he won't keep a collar on. Twice now I've had to collect him because someone thinks he is lost and needs their help. On one occasion someone had driven him to their vet 5 miles away. (Although my cat had only strayed about half a mile from my house.) He is microchipped so the vet called me up. How can I stop this from happening? On both occasions the rescuer had said he "seemed lost".