I love to chop up different herbs in a glass of vinegar...Tastes good to me anyway. But I make give this "cleanser" a try. Just exploring my options

I'm not sure exactely either, but think it varies. They all have certain substances in them that you can find in any herb book that will kill certain parasites. I think it varies a little how they kill parasites. In the old article about pineapple it seems to act almost as an acid, destroying the skin of ascaris. Perhaps some of the strongest ones (that might be poisonus to us) are 100 times more poisonus to them since they have to deal with it firsthand. I think some drugs claim to destroy metabolism so that might be another way for herbs also, but haven't studied it though.