greybeard
Herd Master
Studies using different approaches for control of both barberpole and meningeal worms. Everything from tannins to lespedeza, to copper oxide particles...it is multiple pages long.
https://www.science.gov/topicpages/h/haemonchus+contortus+worms
https://www.science.gov/topicpages/h/haemonchus+contortus+worms