Originally Posted by Woodsy
I have noticed that my local feed stores and tack stores sell dewormers that are either one or the other. What is the difference and is either one superior?
There are different types of dewormers, because they address different types of worms during the year.
You can't continuously give your horse ONLY ivermectin or pyrantel, because they don't cover the whole spectrum of worms a horse can get.
You'll also need a dewormer for tape worms, which is given to horses in the fall.
I do a modified rotational schedule.