Section 520.600 - Dichlorvos capsules and pellets(a)Specifications. Each capsule contains 2.27 milligrams (mg) (4 percent) dichlorvos.(b)Sponsor. See No. 069043 in § 510.600(c) of this chapter.(c)Conditions of use in dogs -(1)Amount. Administer any combination of capsules and/or pellets so that the animal receives a single dose equaling 12 to 15 mg of dichlorvos per pound of body weight.(2)Indications for use. For removal of Toxocara canis and Toxascaris leonina (roundworms), Ancylostoma caninum and Uncinaria stenocephala (hookworms), and Trichuris vulpis (whipworm) residing in the lumen of the gastrointestinal tract.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. 83 FR 48945 , Sept. 28, 2018