Crikey, didn’t realise the horses weren’t yours. In which case, definitely talk to their owner before putting
anything out. Some of the minerals that are fine for sheep can be toxic to horses.
And licks with molasses in may well be an absolute no-no; they certainly would be for my Fells, they put on weight as soon as look at a grain of sugar
If you are wanting
feed licks for the sheep, rather than just mineral licks, you may need to create a creep area where the horses can’t get at them.
The red Himalayan rock salts contain a huge array of minerals, so depending on what you are wanting from your lick, the salt blocks may well contain everything you want.
Since we started putting them out in all fields, we’ve had far less problems with sheep’s feet. In fact, I think I haven’t looked at a sheep’s foot for twelve months. Mind, we also don’t breed from sheep which need their feet looked at - or whose offspring have needed their feet looked at - so we have been doing both things in parallel.
Are you looking to address a specific, known deficiency, or feed in-lamb ewes, or what?