Yep, I use horse dewormer on my goats, and it works fine

I have used SafeGuard, but it is quite ineffective in some areas and mostly works for tapeworms. Ivermectin is a more all-around wormer and I prefer it. Some people advise you give it at 3 times the dose for horses, and others say give it at the rate they do for horses... either way, it should do the trick.