Anonymous wrote:3.5 days. Lots of extra water (I put a huge bowl of water in the kitchen sink and in the bathroom tub). Automatic feeder that is full.
For anything longer, we will take our cat to the "luxury" cat boarder these days instead of using an in-home cat sitter I hate to ask neighbors to pet sit, and we have one bad experience with a cat sitter who didn't dispose of the old wet food properly and we came home to roaches all over the kitchen. Ick. Plus, I don't have to worry that the door didn't get locked, or the stove got turned on inadvertently, etc.
I highly recommend cat boarding for longer trips.
We've used this cat sitter for trips up to 15 days. We're good with her. Not interested in locking them in a cage for a week.