Don't reach for your pour-on dewormer quite yet.

Under-dosing: If an animal is under-dosed, the amount of the product's active ingredient is not present in the animal's tissues at the necessary level and the product will not deliver the best lice control. One study estimated that losses to the cattle industry from lice are more than $126 million annually. SP 2 sp "Lice can also affect milk production", added Boxler. "Lice populations, especially biting or chewing lice, can explode quickly once they start a new life cycle on the back and neck of the animal", he pointed out. [Extracted from the article]