Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Not sensitive enough!

I received these from a different company, but I know they're the same kind of sticks 'cause they're identical... anyway, I tested at all of the times specified and NEVER received a postive result, yet my BBT shows that I definitely ovulated. I've since ordered the more expensive (and knowingly more accurate) Clearblue Easy Fertility Monitor! I wouldn't recommend purchasing these!