Ok I am trying to become more knowledgable about this chicken raising business. I have my 'mystery' chicken disease problem diagnosed (Lymphoid Leukosis). I would like to take the best care as possible of the 5 birds I have left. People say they worm with Wazine then 10 days later worm with something like Safeguard. My question is ~ why do you need the Wazine ? Wouldn't the Safeguard kill the round worms ?