Do any of you guys use Synanthic to worm your hounds? I seen there is a 22% and 9% version. Buddy used it on one that we thought was pretty cleaned out he ended up passing a big pile of round worms. Not sure of which concentrate (22% or 9%) he used but he dosed it at 1cc per 20 lbs. He supposed to be sending me a pic of the bottle. I read that it supposed to take care of round worms and tape worms. Do any of you guys use it? If so, what's your opinions on it?