I hope someone can advice me..
I adopted an older tomcat from the shelter last year and thought he would stay indoors mostly, but quite the opposite!
I let him out during the day when I'm home as I have no cat flap and the door opens out onto the street. Besides it's a solid oak door and I don't want to cut it up but more importantly I have another cat who never goes out and would run off for ever if she got out by accident. She's extremely nervous even on the balcony and also extremely curious and would surely follow him.
He is very persistent when he wants out, miauwing loudly, scratching and even banging the door. I've tried to get a good routine going, out once in the morning and then again for a few hours after dinner (7-9 or 10pm) and this went well all winter but since summer he wants out ALL THE TIME...4am, 3am, 5am. I've given up a few times and let him out but now it's getting worse. I don't want to leave him out all night.