I've used Rover a couple times. Don't ever use Rover. But if you do, be sure to vet the person as you would a random craigslist ad offering to walk your dog. They do no screening, and any qualifications that appear cannot be trusted.

My dog survived with a handful of punctures after being attacked by an off-leash dog at a park. The rover walker neglected to inform me, even when asked if anything happened.

You want your dog walker watching your dog, not their phone to tap a button every time your dog pees. Hire a professional.