I used them....It took me a while to figure out the color....Like light purple ment u were getting ready to and dark ment you were ovulating...but once i figured it out i got preg. one the first shot...lol....lituralty.....Good luck to you!
They work you just have to read the instructions carefully because they aren't the same as a pregnancy test, they actually might require a bit of interpretation. They really do detect the hormone though. :D