We never had a problem with scours until we bought to our curent place two years agur vet thinks we should not treat the cows with products like scour guard(he says if we start doing it we will always have to do it,but I would rather have to vac the cows than deal with scours)I do give calf guard to the calves as an oral vac as soon as their born,seems to be working aginst rota-coronavirus.I'm still haveing a problem with e. coli scours.I calve in pastures with at least an acre per cow and the cows are in good flesh 5+ - 7 body condition.So what are your thoughts on useing a product like scour guard on the cows or this year useing a product like first defense or bovine ecolizer on the remaining calves at birth.