We go to daycare, the dog park, and the groomer-so it's required.
But...I have a friend who has a mini-schnauzer who got KC, and it took MONTHS to clear up. The poor thing coughed, sneezed, and hacked horribly-they ended up taking him to 3 vets and then to a University vet program...all agreed it was KC, and just a tough strain. She spent so much money, let alone all the time she was worrying about what was wrong with little Gus
He did eventually get better, but it was awful for them both to go through it.
The chi I had got KC twice too-we didn't vaccinate for it since we never took her much further than the backyard or for short walks, but somehow, she did contract it. I'm guessing from going to the vet for a checkup, or possibly from the neighbor dog. It was no fun to deal with it, and I felt so bad for her when she was sick