RepHresh Brilliant PH Tampons?

I just went to the repHresh website and came across these tampons. http://www.rephreshbrilliant.com/Con...Brilliant.aspx

It says: After insertion, the ph tampon provides a rapid reduction of ph to within the normal range 3.5-4.5.

I'm still trying to set up my sway. Would these be a good addition? I plan on using RepHresh every 3 days, with frequent BD to O -1. So I probably wouldn't need it....? I was thinking using one 4 hrs after DTD. My husband and I are both older 35 and 37, so I don't want to dimish my chances of conceiving.

Thanks for your input.