Is there any guarantee concerning Stolen/Theft of property? I don't want to imply I think my sitter will commit something of this nature; just a concern being as I'm having to provide a key to my home.
Install cameras in your house, that's the safest way to be protected. Lock up all your valuables in a safe.
The Rover guarantee may reimburse you for the stolen property with limitations. This means that requests for reimbursement that do not exceed $250 will not trigger any reimbursement. Here are the terms and conditions of the guarantee: https://www.rover.com/tos/guarantee/
Almost all Rover sitters have undergone a basic background check before being accepted as a sitter hopefully that gives you some comfort.