Fenbendazole.

(a) Acceptable daily intake (ADI). The ADI for total residue of fenbendazole is 40 µg/kg of body weight per day. (b) Tolerances. The tolerances for fenbendazole are: (1) Cattle. (i) Liver (target tissue): 0.8 ppm fenbendazole (marker residue). (ii) Milk: 0.22 ppm fenbendazole sulfoxide (marker residue). (2) Chickens. (i) Liver (target tissue): 5.2 ppm fenbendazole sulfone (marker residue). (ii) Eggs: 1.8 ppm fenbendazole sulfone (marker residue). (3) Goats. (i) Liver (target tissue): 0.8 ppm fenbendazole (marker residue). (ii) [Reserved] (4) Swine. (i) Liver (target tissue): 3.2 ppm fenbendazole (marker residue). (ii) [Reserved] (5) Turkeys. (i) Liver (target tissue): 6 ppm fenbendazole sulfone (marker residue). (ii) [Reserved] (6) Quail. (i) Liver (target tissue): 6 ppm fenbendazole sulfone (marker residue). (ii) [Reserved] (c) Related conditions of use. See §§ 520.905a, 520.905b, 520.905c, 520.905d, and 558.258 of this chapter. [84 FR 32993, July 11, 2019, as amended at 86 FR 57998, Oct. 20, 2021; 86 FR 61686, Nov. 8, 2021; 89 FR 85428, Oct. 28, 2024]