A feral tom cat got into the ducts outside one of the bathrooms in our apartment building. He got in somehow but he can't go back the same way because my downstairs neighbours decided to block the duct by placing one of those plastic sheets between their floor and ours. He's been stuck for a while now so we decided to get him on our balcony and get him in one of the trap things so we can take him to the vet and get him fixed. But I guess he figured out what we were doing and now hides behind a cabinet whenever he sees us. He's also really mean and has tried attacking my cat through the glass door. I really don't know how to get him out now. We tried calling shelters and they said they would take him in if we got him to them but they don't have enough staff to send someone to try and catch him. I want to take him out as safely as possible. Can anyone suggest anyway for me to do that? Thank you.