Grandma Mae's Country Naturals Duck Meal Recipe for Cats & KittensOur Duck Meal Recipe is a non GMO dry food made with the highest quality duck meal and healthy brown rice. Like all our cat foods, this recipe is Uristic, a word that means optimized for long term urinary tract health. The formulas 1% Methionine, found naturally occurring in our fresh ingredients and supplemented to optimal levels, raises the acidity of urine. This helps break down urine crystals and in turn reduces inflammation of the urinary tract