Durvet - (Sulfadi-methoxine Powder) - Each packet contains 94.6 gm. sulfa-dimethoxine. Labeled for poultry and cattle. Widely used to treat coccidiosis, bacterial enteritis and respiratory infections. Directions: 1 pkt. per gallon of water makes stock solution medicate 1 oz. per gallon the first day - then 1/2 oz. per gallon 4 more days. Poultry: 5 day withdrawal. Cattle 7 day withdrawal.