I was told by my Vet that the best wormer to use is Cydectin at 1cc per 20lbs. It reall smells like meds and I'm sure taste bad. Anymore else use this wormer? I was told Safeguard has been used so often in the South that it no longer works on goats. :? I want a wormer that will treat lung worms since some of the goats are coughing.