...If you use two or all three, you're creating redundant cleaning/conditioning, just at different levels of "clean." Does that make sense?
If that logic tracks, it might also make sense to use a tiered-approach to cleaning an abused bag: start with basic washing, move to either Apple or Leather CPR, and if neither of those gets you where you want to be, move to BlackRock. That's the stage I'm at now with some of these bags.
Thank you and it does help, and does make sense. I am approaching it with the 'tiered' mentality, because I like to keep things as simple as possible, but also don't want to waste my efforts, but I see what you mean about the conditioning properties won't be undone, just any excess product will possibly be cleaned out which is probably fine.