Yes, Rover does require a basic background check for all sitters and walkers who want to join. The background check makes sure of your identity and checks for any relevant convictions or pending cases. A third-party company called Checkr carries out background checks. The background check takes about 7-10 business days to complete. A background check will set you back by $25 and is non-refundable. You can go for an optional, more detailed background check, which will cost $35.