It changes every time we go in after our 4 days off but as the campus is now opening it has too , one at a time in the break room anything you touch you wash down . One per car when you swap over you wash down the steering wheel ,handbrake , gear stick window controls , radio controls etc we carry ppe in the back of the cars use it report it and get it replaced same with personal issue there trying to get one person in the car for the 12 hour shift but its not practical