My pullet -3 months- has had Gape Worm --classic symptoms-- for the last three weeks. She's about 12 oz. I treated her 3 times with Invermectin (Ivomec), no improvement. I then treated her 6 times with Fenbendazole (Safe-guard liquid for Goats), at 3-day intervals, first 1/2 drop, then 1 drop, then 2 drops, them 3 cc mized ion 1/8 cup water mixed in 2 lbs. crumbles for 3 days, to the flock, then today with 3 drops Safe-guard again. I don't want to risk any more dosage of Fenbendazoleut... I'm about to spend precious reserve funds on the specialty vet, but I REALLLY would like some imput what's worked for others... how many doses & how long does it take. She still gapes, shakes her head, and coughs. I never could see red worms in her windpipe. Any other thing this could be?? What ??? !!!