There are many types of wormers..... For lice,mites and most worms I use Ivomectrian inject able in a syringe an apply it to the skin under a wing or back of neck. But you do have to hold off on eating eggs. Safeguard is good for many types of worms and helping to prevent Blackhead disease in turkey and peafowl. Levasole is another good wormer. For Tapeworms i use Zimerctrian gold, a horse wormer paste and give only a small dab in the beak over the tongue depending on the weight of the chicken. Wazine is only good for round worms.