For the treatment and control of blowfly strike in sheep and lambs, and for the treatment of lice and ticks on sheep. 

Use:
Blowfly - For the control of blowfly a single application will normally provide 6 to 8 weeks protection. 
re-treatment may be necessary after this period.  
A single application is sufficient to ensure that larvae are expelled and killed within a few hours.

Ticks - A single treatment will give 10 weeks cover. 

Headfly - One application of Crovect Pour-On before the start of the headfly season will give up to 4 weeks protection.

Lice - 5ml per 20kg bodyweight up to a maximum of 20ml.  

Dosage & Administration
Crovect Pour-On must be applied only with the Crovect Pour-On Gun as this product may have a detrimental effort on certain components of coventional dosing guns. 

Withdrawal Period 
Meat - Animals must not be slaughtered for human consumption during treatment, Sheep may be slaughtered for human consumption only after 8 days from the last treatment. 
Milk - Not to be administrated to animals producing milk for human consumption.

Contraindictions, Warnings etc
Extremely dangerous to fish and other aquatic life. Do not contaminate ponds, water-ways or ditches with the product or empty container.

Please see below link to the Veterinary Medicines Product Information Database
http://www.vmd.defra.gov.uk/productinformationdatabase/Default.aspx