Protection against theft?

Hello! We are interviewing a potential in-home dog sitter from http://rover.com, but one thing I'm a bit uncertain about is having a complete stranger stay in our house while we are away. I know http://rover.com does general background checks, but what if a sitter steals something from the premises?

I don't want to believe this would ever happen, but just in case, I'd like to know if there's any protections/insurance http://rover.com offers relating to theft.

Thanks!