Jessica (Scottsdale, US) on 12/03/2014
Boric acid doesnt " cure" it but it changes the bacteria from bad to good ... once it wears off, the bv is still there and the bad is still there. I'd say you need to use it every 3 days or so to maintain freshness.
I personally struggled with it for a long time too and boric acid is the only thing that works.
Replied By Delilah (Wa) on 12/11/2014
I believe you have to use the boric acid for at least 2 weeks to start. Then, use is once or twice a week to maintain if needed. Just as with antibiotices, if you just use a little you risk having the bacteria grow resistant to the treatment unless you kill them all off. Each time you use something and it doesn't kill all the bacteria, the bacteria that doesn't get killed is stronger and more resistant to treatment.