I don't believe BV is a vaginal problem. I've had it for many years and have been trying all kinds of solutions with only brief relief.
Topical solutions (if you can call inside your vaginal topical in this case) will relieve the annoyance of smell and discharge temporarily, but I think you also need to look at it from a holistic point of view. I believe oral probiotics are probably the only way to totally rid yourself of this disease.
I started this combo of ACV and Baking Soda and it was showing signs of improvement, but at the time I had lost my availability of organic non-homogenized milk for my kefir and it started causing some problems for me. Unfortunately for me where I live now I do not have access to this kind of high quality kefir, only UHT milk available, and I can't continue to use this combo.