Estrus Alert Patch's are sold by the sheet or you can buy them by the box which includes 50 sheets.
Warm ESTROTECT to human-body temperature before application. (As long as the product is kept warm, it can be applied in all seasons.) Remove dirt, sand, dust, shedding and loose hair (do not shave hair) from the tail head. Wipe away any excess moisture with a towel. Press Estrotect onto the hair across the backbone (side to side) just forward of half the length between the hooks and pins. Rub Estrotect onto the hair with your bare fingers. Rubbing will not damage the silver surface.