I live on Ft. Hood (Army base) so I keep my horse out at the ft. Hood stables. They have certain regulations on worming your horse and such because some people just don't know how to take care of a horse. Sounds kinda dumb coming from the person asking the question. But, the vet that works for Ft. Hood wormed my mare in October. The tube she used was white with no label so I didn't find out what she used. I got a letter from the boarding office saying the wormer did not prtect against tapeworm. I have always used Ivermectim [spelling?] or Ivermectim plus, but, that was back in Oklahoma. So, what do I worm her with? I would like whatever I worm her with now to cover quite a large spectrum of the worms that are out there.
In the meantime I'm going to look for the paper that tells me the requirements of my wormer.