Favorite non strip opk recommendation

Mimi • Wife 💒 Fur mama 🐯 🐕

I've been having a rough time with the strip opks. Sometimes it shows ovulation, when I'm obviously not. I use Clearblue Digital, the one with the smiley face, and a generic strip opk from the chemist/drug store. I like to use two at a time to check the accuracy of both. Does anyone have any recommendation for non strip opk?