So what is everyone using. I have used the Estrus Alerts and they are fine but has anyone used spray paint and liked it. If so exactly what kind. There are dozens out there and I really don't feel like trying a bunch if I can use someone's research.
I don't think you can beat Estrotect heat detectors..... I shear a strip on the tailheads when I clip freeze brands before calving then add a little extra glue when we place them at aiing