Ooh I have heard of these, I was also tempted to try one as OPK's don't work on me.
I hope someone post's about these, they sound more my type of thing
xxx
Those Saliva tests totally work! I've been using one in conjunction with a Basal Thermometer and ov. tests. If you start using the saliva test right from day one of your cycle, you can really see the difference! There is no mistaking the "ferning" for anything else...in fact it's quite cool!
Best of luck!