Just to add my .02... I tried this with 2 of mine... 1 wether who used his horns inappropriately on the other kids, and another girl who had these long dagger-like horns, and wasn't super cautious about throwing her head around - I was afraid someone would lose an eye.
Advice:
1. Shave around the place where you're going to band if they don't have super short hair. Mine got their hair stuck (they've got fluffy heads) in the bands, and I think it hurt.
2. If you don't see any difference in behavior/horn shape after a few weeks, pop another band on there, down below the first band. The wether wore his bands for weeks, with no effect - Once I put the second set of bands on, things started to happen - first set must not have been low enough.
3. If you don't have the nerve to cut them to hold the bands in place (that's me) you can create a groove by filing the horn (I tried this previously, but it didn't work for me - I couldn't get low enough with the file) or create a ridge with duct tape and put the bands below the ridge.
4. Watch them - both mine got really depressed toward the end - the wether still won't come within 5 feet of anyone else, afraid someone's going to touch his head. (His second horn is still dangling) The girl was afraid to come with the herd for food, so I would lure off the rest of the herd, and give her some alfalfa while no one was looking. The horn bands are really delicate and painful, I think.
5. When the horn falls off, there'll be a gross-looking red raw area. Wonder Dust coats it and it dries up and heals super fast.
It was super convenient, and I think a good way to get rid of horns on someone who's causing problems - but I don't think I'll do it again. I was really worried about these two, and hate seeing my goats unhappy. Once the horns got really loose, they were both afraid of being near the other goats, I couldn't touch their heads (Even to put on meds, etc) and they were generally unhappy. That was about 3 weeks each of real misery - they both lost condition and look terrible. The girl finally lost her second horn this week, and is bouncing back - even bopping people with her now-naked head... The boy's second horn is STILL hanging on - but he's clearly more comfortable now, I even saw him lying near his mom yesterday afternoon. (He's almost a year now)
If anyone has suggestions for how this could be done in a less painful way for the goats, I'd love it - it was really really easy to do, but oh I don't like watching my babies suffer! (Granted, my goats are utter crybabies, but... aren't they all? These are Nubians by the way)