To cancel an assignment before it starts, home owners can click the 'cancel this assignment' button on 'My sitters > My current sitters & applicants' page and follow the intructions. You can also add a special message to all the house sitters who applied in the popup window, as they will all be sent an email notifying them of the cancellation.
It is also assumed that home owners only cancel an assignment before it has started!
If it has already started, we generally advise that the home owner: