This wormer really works!  My horse had bots in his eyes (summer sores) and the vet told me I had to use Quest and several doses of Ivermectin to get rid of them.  So much poison all at once!  I decided to try Worm Secret and after 12 days the vet came back and checked my horse.  All the bots were gone!  And I didn't have to use the chemical wormers!  I'm glad I found Equine Secrets.