Been using them since June 1st. From June 1st until the 4th I got the "low fertility result". Then on June 5th I got the "peak/ovulation day" result. Not high fertility. It went from nothing to peak. Then after 48 hours I tested again just to be sure. Got the low result again. Then the very next day, it tells me I'm ovulating again. WTF? Going to keep testing this month just to see what I get in the way of results but there is no way this is accurate. Luckily my husband and I are not relying on these tests. BTW, I am using the Clear Blue Digital Ovulation Kit.