You would dose the fenbendazole orally, amount I gave in previous post. Safeguard will settle out of water and they wouldn't get the correct amount. Dosing 5 days in a row will take care of both the capillary worms and the round worms. Round worm is more common, and is often recurring since the eggs live in the environment a long time, making reinfection common. If you ever need to treat for just round worm, you can do two doses 10 days apart. The amount to give each time is the same, .23 ml per pound of bird weight, only the amount of days and time between is different. Shake the bottle well before drawing the dose. When I do mine, I lock them in the coop the night before, go out early before dawn and take them off the roosts, give them the dose and put them in the run. When the coop is empty you know you've dosed everyone.