I actually read in a newspaper article some years ago that tomato juice does work but it takes several applications and it’s messy to work with. I don’t know that I’d want to venture tomato juice in a carpet cleaner! If your shoes are the only dilemma, I’d think anything is worth a try! I don’t know how similar this manufactured juice is to the real thing but I do remember that article saying that for skunk sprays, there was a much better option than tomato juice but darn it all………….I can’t remember what it referred to!
Your local veterinarian should have a good recommendation or two because they do treat dogs for learning the hard way. Again, not sure how close “juice” is to the real thing, but again, I think it’d be worth a try.
Good luck and best wishes to ya!