Hi Angela. I would modify the wording even further, considering the many comments we see on the forum from sitters facing less-than-ideal conditions when they arrive. My choice would be ‘Be sure to leave the home at least as clean as when you arrived.’ or something similar. I think the majority of sitters aim to do that, if not more, but a ‘well-kept space’ is often not what sitters find when they arrive.
I have previously mentioned too that ‘owner’ is not an ideal choice as it does not include those who do not own the space the sitter is caring for. Perhaps it’s referring to pet owner, but we know that’s a debated term too. No suggestions from me on solutions for that one though, unfortunately.