Pump Sanitation @ Work


How do you all keep your pump parts sanitized during the day at work. All I have is a sink and a fridge. I wash at the sink and put the parts in a ziplock bag in the fridge. I notice the other mom who shares the mom room doesn’t wash the pump and just puts it mounted in the fridge in a ziplock bag. Im not sure whats ok and what is not. Also, I wash my breast each time. Do I have to? It takes a lot of time. Should I not wash the pump?