rinse with hot water and soap. prepare a big tuppaware to store all the part parts and then wash with hot water inside the tuppaware as some sinks at work might be dirty. can also invest in portable sterilizer if u have the extra money. i bought 59s portable sterilizer. can use during travel as well
store in a ziplock bag or wet bag in keep in the fridge for the next pump. wash and sterilise only at home
put back in tupperware and fridge until the next pump, wash and sterilise at home
I sterilise once a day. If at workplace can rinse with hot water after soaping