Low grade, controversial or vague ingredient we usually recommend avoiding
MOS in dog food
Mannan-oligo-saccharide (MOS) is a nutritional supplement which is becoming more popular in dog foods due to its beneficial pre-biotic effect. It encourages the growth of 'friendly bacteria' in the large intestine which promotes over-all gastro-intestinal (GI) health. MOS is derived from the cell wall of yeasts.