I've never had to cancel an appointment yet. Storm has never given me any problems. I just pick him up and shove him into the carrier. I usually have to chase Sunny around the house a few times until I'm able to grab him and then I stuff him into his carrier. Now with Cirrus it's much more difficult because he's so fast and he won't let me pick him up. I have to chase him into the bathroom and then when he's hiding behind the toilet, I put the carrier down on one side and I use the toilet brush to chase him into the carrier. I also have to close my bedroom door so that the cats can't hide under the bed. :)