Swat No MoreInternal Top Dress for Flying Insect Resistance like Flies & Mosquitos Proven more effective when Top Dressed approximately 3 weeks prior to season Less flying insects on horses and in the barn Suggested maintenance is 1 2 ounce per day Active Ingredients per 1 oz.: Dried Garlic 2,400 mg Methylsulfonylmethane 2,400 mg Diatomaceous Earth 4,200 mg Inactive Ingredients: Alfalfa Meal, Dried Whey, Yeast Extract, Kelp, Garlic, Dried Molasses, Thiamine