At the point that the soda stops foaming,, the acid is gone,,, To help clean up the mess most parts stores carry battery cleaner.. Its mostly just soda,, but does have something else added that seems to clean up the scum better than just soda alone..
Our 72 Overlander had a mess in the battery box,, but this system cleaned it up well,.
2012 Ram 1500 Tradesman Hemi, 4x4, 6 speed
20mpg empty, 14 mpg with 27' Overlander.
Today is the first day of the rest of your life!