Did you give the soaked beet pulp mixed with soaked LMF? Usually you have to start with a small amount of soaked beet pulp added with his normal LMF. Then you can slowly increase the beet pulp, etc. It is good to have everything wet and dissolving so that he can't pick out the LMF pellets from the beet pulp, etc. Most horses then quickly accept the beet pulp and some even then refuse their old stuff without the soaked beet pulp, etc.
