Quote Originally Posted by Glacier
Not all livestock dewormers get all kinds of worms. They have to be rotated to ensure all the different types are eleminated.
I asked the boss about this one, he said livestock can get a variety of worms, and that worms can sometimes be resistant to wormers, hence the reason for rotation of dewormer meds.


Quote Originally Posted by Glacier
Pet dewormers(at least the good ones) get all the different types of worms at once so no need to rotate.
There is no such thing! There are several different meds for many of the worms/parasites that cats/dogs can have (whips, rounds, hooks, tape, coccidia etc.). It's a myth that one dewormer does everything. The reason we don't rotate in pets is they don't get worms as often as livestock and don't become resistant to the dewormers.