When I would trap cats I would set out the trap at night and catch them and keep them in a cage in my bathroom.

But if you don't have separate cage, I'd say the cat carrier would be fine. Sometimes when they get so excited I put a towel around the cat carrier so they can't see out and that tends to calm them down right away.

If you can get Gary without using a humane trap I'd suggest doing it but wearing a long sleeve sweatshirt and maybe some gloves incase he trys to claw you.

Good luck and I hope you get him before his appointment.

Melissa