yes, vermx is what a lot of people use. keep looking on interwebs. in fall i give my ladies all the pumpkin seeds they want for month or so. and after harvesting my pomegranates, seeding them, juicing, etc. i let skin rind dry, grind it and give it to the birds when i feed bowls of leftovers. pumpkin seeds, pomegranate rind, tansy seem to work for my birds. they are happy and productive. its a lot easier than chemicals for me. i used wazine twice at the urging of some old timers here, years ago. now i just say i worm my flock in the fall. . but i have been seriously considering ivermec for other parasites and bought a bottle thursday. good luck.