BowsandRibbons-
I have been using the lime tampon for my attempts these past 7 months. They are very useful in keeping your ph down in the 4s. I am doing TBM (and not successful as you can see, but I am 40 and apparently have a cyst in my uterus which will be removed next month).
You make a douche of half lime, half distilled water and soak whatever tampon you wish in. There are times when I can't quite nail the 0+12 on the head so it is useful to hold down the ph those extra hours.
I have gotten YI from them. Others UTIs. so it depends.
GL to you.