Withdrawal Periods Z Company Product Cattle Milk Cattle Meat Sheep Meat Pigs Meat Poulty Meat Poultry Eggs Fish Meat Notes Zerofen 2.5% Chanelle Animal Health Limited 96 hrs 14 days 21 days - - - - Not for use in sheep producing milk for human consumption Zerofen 4% Powder Chanelle Animal Health Limited - - - 21 days - - - - Zerofen 10% Chanelle Animal Health Limited 96 hrs 14 days 21 days - - - - Not for use in sheep producing milk for human consumption Zerofen 22% Granules (Horse Wormer) Chanelle Animal Health Limited - - - - - - - Horses: 35 days Zincoped Battle, Hayward & Bower Ltd - - Nil - - - - - Zulvac 8 Bovis Fort Dodge Animal Health - Zero days - - - - - -