Proden PlaqueOff Soft Chew Dog treats are a soft edition to the popular and growing brand ProDen PlaqueOff. There are 90 soft chews, designed for small to medium sized dogs. These Soft Chews contain the 100% natural, unique kelp ingredient A.N ProDen, shown in clinical trials to help control and improve plaque and tartar and to help improve bad breath when used as directed.