I vote that everyone mails their cats to Spudcon. Air holes optional.
Zewb, are there any birds of prey in your area? My husband lived in California when he was little, and they had a pet rabbit they used to let out into their back yard, which was fenced in. One day, the rabbit disappeared without a trace... but they noticed an awful lot of large birds around the house over the next two weeks. The birds kept squawking something about a Bunny Buffet...