Bloat Guard Drench Contra-indications, warnings, etc Withdrawal periods Milk for human consumption must not be taken during treatment. Milk for human consumption may be taken only from cattle after 24 hours from the last treatment. Animals must not be slaughtered for human consumption during treatment. Cattle may be slaughtered for human consumption only after 3 days from last treatment. For oral use only – not injection. For animal treatment only. Keep out of the reach of children. If the animal does not appear to respond to the treatment, obtain veterinary advice.