I love them ! And they are easy to read but expensive, but worth it .

1. I would start using it a little before your estimated “fertile “ days that way it can pick up and read a pattern and then determine the smiley face which is your surge

2. Don’t pee or drink water at least 3hr at the least 4 at the most . Water can dilute it and you need as much urine as possible . And if it dilutes you maybe missing the surge or have a wrong result

3. I pee in the cup instead of holding it . That way I know my urine is submersing correctly and I get accurate results

4. If u can , recommended to do 2x a day . One in the afternoon. Say about 12-3pm and one at night maybe before bed . Mine was always taken at 2 . Got darker at night . But it varies

5. U should also use bbt to confirm u ovulated . That way u can confirm how long after the surge u are ovulating .

6. Don’t get discouraged if u get one smiley face . If u aren’t using the advance ones . It is usual for one smiley face . Don’t test as if ur surge maybe done . I sometimes just use one go really confirm . It is almost always right .

Good luck and baby dust ! I’m trying preseed with this for fun . Had good reviews . Should try to check it out !

So I used a Clearblue OPK this month and I never got a smiley face