You could keep him in a room that you've set up for him, but it might be really difficult to catch him again in the trap. The only way you could do that is if you make the trap his "Safe-spot". That is, if there are no other hiding places in the room and you line and cover the trap so that it is his bed.
If you're only planning to keep him in the trap overnight put a sheet of cardboard on the bottom of the trap and cover this with a layer of straw. (Make sure the cardboard and straw don't stop the trap door shutting all the way.) Once he is in the trap stand it on a couple of bricks so that is he pees it will drain out. You can keep the trap covered but you'll need to move it somewhere safe, indoors or into a garage.
Weigh your trap with the cardboard and straw in it. It's a lot easier for the vet to work out how much anesthetic the cat needs if he can weigh him accurately in the trap. Less stressful for the cat too.
Your husband's idea of a safe room for him is great, it will make a good recovery room for him after the operation. Are you hoping to keep him as an indoor cat?
If you're only planning to keep him in the trap overnight put a sheet of cardboard on the bottom of the trap and cover this with a layer of straw. (Make sure the cardboard and straw don't stop the trap door shutting all the way.) Once he is in the trap stand it on a couple of bricks so that is he pees it will drain out. You can keep the trap covered but you'll need to move it somewhere safe, indoors or into a garage.
Weigh your trap with the cardboard and straw in it. It's a lot easier for the vet to work out how much anesthetic the cat needs if he can weigh him accurately in the trap. Less stressful for the cat too.
Your husband's idea of a safe room for him is great, it will make a good recovery room for him after the operation. Are you hoping to keep him as an indoor cat?