I try to avoid opening the front door all the way and place a cafeteria tray on the floor to catch what drips off the door bottom when I do fully open it.
I sometimes get coolant running through the spindle which then drips onto the control cabinet (as you mentioned) and, worse, spins off the collet closer onto the wall, ceiling, and floor. I put a small plastic food tray on top of the cabinets to catch the drips off the closer and made this magnetically mounted shield to direct the spin-off toward the food tray.