I wouldn't want to take my cat to a vet that would label my cat as "feral" and not want to deal with him anyway, that is part of being a vet!
Have you looked for vets that do housecalls? That would make it so much less stressful for everyone involved.
If you have to get him in the carrier, get him used to it first. Leave it out in an area that your cat frequents, put toys or treats inside. Hopefully he will explore it on his own, and make it so he doesnt associate the carrier with going somewhere scary.
And the stress transfers. Try to stay as calm and relaxed as possible. He will be able to sense your stress, and this will make it harder for him.
Have you looked for vets that do housecalls? That would make it so much less stressful for everyone involved.
If you have to get him in the carrier, get him used to it first. Leave it out in an area that your cat frequents, put toys or treats inside. Hopefully he will explore it on his own, and make it so he doesnt associate the carrier with going somewhere scary.
And the stress transfers. Try to stay as calm and relaxed as possible. He will be able to sense your stress, and this will make it harder for him.