Kit Cat Fillet Fresh cat treats are created by nutritionists who are cat lovers and are made with the goodness of carefully selected natural ingredients. Made with 100% deboned mackerel with no added colours or preservatives, our Fillet Fresh is hand cut and gently cooked to perfection for cats of all lfie stages. Grain-free, delicious and 100% natural - this will be the most irresistible and ideal treat your cat will crave.