I have 2 hens and have been in the process of deworming them for tapeworms. I started with Wazine and am now on my 2nd round of Valbazen. My larger hen no longer has worms in her poop, but my smaller hen is still pooping loads of worms. The deworming meds don't appear to be reducing the number of tapeworms in her poop. Here are my questions: 1. How many rounds of meds can it take to cure a bad infestation? 2. Do I keep doing Valbazen until there are no more worms in the poop? 3. Do I keep deworming both hens or just the hen with worms in her poop? Thanks!