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Deosect 5% contains cypermethrin. It is diluted and applied topically to horses up to every two weeks to effectively control flies and lice. Deosect 5% should be applied throughout the fly season monthly, increasing to every two weeks in horses with lice and those in contact with them as necessary.


This item is a Prescription Only Medication (POM). If you would like to request this medication, you can do so by completing a prescription request form PRIOR to checking out.


Medication that is purchased without the completion of this form will not be dispatched.

Deosect Fly & Lice Killer For Horses - 250ml

Excluding VAT
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