So I gave my hens some prazidine (sp?) in their water this morning because I noticed some round worms in a poo. ( I blame it on the barn cats). So I was wondering how long I should toss their eggs for? One week? When should I re dose them? Do I have to? I give them DE, pumpkins seeds, garlic and ACV. I really don't like giving them this Prazidine- but I felt I had to make sure the job was getting done. Any input would be appreciated. Thanks guys.