However, their use has limited effect on the incidence of new infections by environmental pathogens. Although most germicidal teat dips kill coliform and environmental streptococci on teat skin, exposure to these pathogens occurs primarily between milkings, long after the killing capacity of the teat dip has been reduced to near zero. Latex, acrylic, and polymer-based products form a physical seal over the teat end in an attempt to impede entrance of bacteria into the udder. Use of barrier teat dips can reduce the incidence of coliform mastitis. However, efficacy of physical barrier dips against other mastitis pathogens appears minimal.
Frozen teats are a big problem for dairymen.
Use new teat dip products like Dermsept from Surge with skin conditioners. When the temperature or wind chill drop below 20 degrees F, wipe teats dry after post dipping. Stop teat dipping temporarily. This is the least desirable option but may be necessary in order to best manage the cold weather. Dry cow therapy .