How long does it take for symptoms of the mange to show on a cat?
after it has come in contact with another animal that had the mange
Mange is fairly unusual in cats. It takes about 12 to 14 days to show up. I would wash the cat in a shampoo such as Sebolux Shampoo as a preventative measure available at www.revivalanimal.com. Also, Revolution topical flea treatment treats and prevents mange mites as well. I believe that you still have to buy that from your vet.

sorry I don’t know the exact answer, but found this website which should be able to help you determine if your cat has mange http://www.peteducation.com/article.cfm?cls=1&cat=1334&articleid=737
References :
Mange is fairly unusual in cats. It takes about 12 to 14 days to show up. I would wash the cat in a shampoo such as Sebolux Shampoo as a preventative measure available at http://www.revivalanimal.com. Also, Revolution topical flea treatment treats and prevents mange mites as well. I believe that you still have to buy that from your vet.
References :
cat breeder for over 6 years