It appears I have been worming my chickens wrong for years. I was giving my hens one pinch per hen per day in some porridge for 7 days. It turns out they have to eat it mixed with their feed exclusively over the course of each day for 10 days with no other food - the mix is based on the amount of food and not the amount of chickens. I contacted the manufacturer and that is what they have told me. I have never seemed to have any problems with worms, what does everyone else think?