Works as it says , nothing to worry about when it is DUO treatment.
Good product, would say has helped to protect our racing horses at the right time.
best horse wormer, we give every spring and autumn, it protects well
One of my horses LOVES her dewormer, eats it straight like it's a treat, but she's probably just weird that way as the other horses have to be wrestled into taking theirs.
second round of treatment going on, it simply works