Classic hay made from grass, which is common in our country, is popular because of its lower energy, protein and calcium content. Hay meets the nutritional needs of the largest percentage of horses in Germany. Whole flea seeds generally help to clean the intestines and can thus contribute to a healthy microbiota, which is the basis for every healthy horse. Flea seeds can have a positive effect on sand colic, diarrhea, faecal water and stomach ulcers/stomach irritation.