Anyone who would leave their pet with a total stranger without meeting them, seeing the place they will be hosting from, and checking for multiple reviews as well as repeat clients is taking a terrible risk. A sitter who would take a dog without meeting the dog and owners can't be trusted because they clearly don't care about the dog or if it will fit into their lifestyle or with the other pets they might be caring for. So, Rover is only as good as your search and interview skills.