In general, the booster is eaten very well by horses. However, there are around 2 to 3 particularly “fussy” specimens for every 100 horses. You can first introduce the taste of the booster to the horses with a small dose (e.g. ¼ to 1/2 teaspoon). You should always add a sip of water to the metabolism booster (and also the magnesium) so that the horse does not have to eat the additional feed “dry and powdery”. You can also sweeten the horse's taste at the beginning with, for example, a little grated apple or yellow beet/carrot or a little apple juice or unsweetened applesauce or a little honey. The zinc added in the metabolism booster has a somewhat bitter taste and that is the reason why a few horses find the booster somewhat difficult to eat. If the horse is SUPER HICKY/FICKY, then you can also switch to the great Hemp PLUS mixture. So far all horses (even the pickiest ones) have eaten this very well and happily.