I'm giving these 3 stars because I'm not sure if it's user error or what, but they were basically useless to me. I could never figure out what the PH was by comparing the strip to the colors (it wasn't always the same shade, but I could never figure out what matched on the scale). I personally think it's easier to use your own. Intuition (you know when something is wrong!). You can use tea tree oil to treat almost anything because FYI TTO works on both bacteria and yeast (and works way faster than any homemade kit!). Find a swab method. Incidentally, other reviewers have mentioned that these strips aren't even good for BV and YI testing as you might need a wider bandwidth for that anyway. If I could do it again I would definitely go with this instead: Hydrion Ph (93) Paper with Dispenser and Color Chart - Full Spectrum Insta Chek ph-0-13 (which cost $8 at the time of this review) or Test pH strips , Sonkir Universal pH Strips, Acid-Base Litmus Paper Roll, pH 0-14, Full Range (16.4 ft), ($10). They test the full range from 0 to 14 (and therefore you can use these strips for other purposes such as testing the pH of your beauty products to ensure they are in the right range to be effective ).
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