I remember that when we would run drinks you ran water, bug juice, tea and finally orange juice. But you never ran milk on the juice line or juice on the milk line.
A production bay on drink mixes starts out on lemonade, moving next to lime, then the orange, then the teas, and finally the horrid... Red Berry to end out the run, and then wash. That schedule prevents colors and flavors from co-mingling. Doing the wash at the end after red seems like you’re in a bloody slaughterhouse. Walls, ceilings, rainsuits, socks and shoes, all murder-red soaking wet. Then back to lemonade. Each run goes for at least a week.