When anyone mentions spraying pastures I'm always reminded of several discussions here in the past where manure from cows that grazed Grazon or similar treated pastures killed gardens even a year or two after spraying.

I don't want to eat meat, nor do I want my customers eating meat from an animal whose manure will kill a garden.

Here, high intensity rotation grazing, occasional timely clipping or haying controls weeds well enough. Same as WCWI.

Is it perfect, no but I don't have traces of herbicide in my product.

2,4-D for example is a systemic herbicide. Along with who knows what other herbicides are added to it these days. It may not kill grasses but it is still there.