It has been formulated to add mineral salts to your horse's diet. Mineral supplementation is necessary throughout the year to replenish the mineral salts that horses lose through sweating. Unika Balls: a healthy hobby for your horses. Linea Unika has designed an innovative product, which completely changes and renews the conception of complementary food: It's called Unika Balls and it's much more than a hobby for your horses. Unika Balls are balls which, thanks to their natural fibre ropes, can be attached to the stall or truck so that the horses can taste them during the day. Their function is not only to entertain the horses: Unika Balls actually enrich their daily diet with important substances such as herbs, electrolytes, vitamins, minerals and many others. And this in a completely new way! We usually think of complementary feeding as powdered or liquid products to be mixed directly into the daily ration of food, but Unika Balls turn this concept on its head and are a kind of suspe