Go ahead, turn the tray around and look at our ingredients. ® Mixers for cats are made with only 1- 2 ingredients. PureBites® Mixers Variety 4-pack come with 2 trays of Wild Tuna in Water 1.76oz / 50g & 2 Trays of Wild Tuna & Wild Salmon in Water 1.76oz / 50g. Cats love the taste of PureBites® because our treats are pure, locking in the aroma, texture and freshness they crave. Cat parents love PureBites® because our treats are rich in nutrients for a happy and healthy life.