If you are looking for gapeworms, they can only be seen in a dead chicken by cutting open the trachea or windpipe. Gapeworm is fairly rare, and can be confused with respiratory diseases such as ILT, MG, or coryza. Gapeworm is treated with fenbendazole (SafeGuard, Panacur) 1 ml for a standard size chicken given orally for 3 days in a row. Levamisole also can be used in successive days.how do you swab their throat? open their beaks and stick a q tip down?