Many people on BYC will say it's the best, and in some ways, maybe it is, but how many people can say they have been using it on their 10 year old chickens for the last 10 years? Safeguard (fenbendazole) is a much safer choice, IMNSHO, lol.I read that Valbazen is THE best one to use but since you pointed that other info out to me, i'm scared.
-Kathy