Do you pre-rinse?

I am using the momcozy bottle washer and sterilizer with their tablets for cleaning my M9 pump parts and glass bottles. If I simply load the stuff in and run it, the milk film dries as a powder on some surfaces. Wiping things after defeats the point of sterilizing so I have been pre-rinsing and wiping all surfaces before running it. I still love the washer and use it everyday but wondering if there is a way where I can avoid the extra step.