Fee, I am so sorry I should've edited that post. I thought it did work for me, but when I used it the next month it never corresponded to FF and the positive OPKs.

I rang the manufaturer and they said I should be using it first thing in the morning (and I was doing it at around 1 pm) When I did do it first thing in the morning I never got any ferning what so ever. All I ever saw was dots and that was even on the days I got a partial positive OPK or a definite positive OPK. I kept using it for a few months and nothing!!

Personally I would rather spend my money on OPKs and even better nothing on FF and get a better result than $70 on something that may or may not work and in my case it actually didn't.