Most boots that live in shit will die soon. That is unless you clean/treat them often.
On our small holding we have pigs, sheep, horses, chickens and geese. From September till March, leather boots will not take the stick you mention without almost regular drying and treating. So. Id bite the bullet and wear wellies for yard work and then save boots for field work. Sorry it's not the feedback you were looking for, but experience tells me that in the wetter months, at least, that the way to go