I trapped a feral cat and the vet wasn't able to get them in right away for spay and neuter so it is in my home at this time. In the past, I've always been able to re-trap the cats; but this one is determined not to be re-trapped. I want to get him in to have him spayed and neutered and vaccinated. I asked my vet about putting some kind of sedative into his food so that he could be caught; but the vet didn't seem to be in favor of that. Any advice about what I might try?