Hi Kym
I'm presuming you're feeding a proper goat mix?
I get the red Rockie (copper) for mine, I wedge it in the hayrack so they can only lick it, one tries to chew it!
I also feed Caprivite, all mine just get some sprinkled in their feed, none refuse it. I get mine from a local equine shop, who order it for me from 'Battles' wholesalers, look them up on the web and you'll find your local supplier there, saves postage.
I wonder if beef cattle nuts would be any good? I fed 2 wethers up to slaughter weight last year, they did well on them - maybe others can come back on that ?
Haywaste is a heartbreaker (as well as the wallet), look up 'keyhole hayfeeder' (or some variation of that) on the web, we've made one but it needs a bit of tweaking, the step up is too high and she still lifts her head out with a mouthfull of hay, turns her head to look round and I see all the hay scatter from her mouth
. ha well, back to the drawing board.