Thank you for viewing! (*´꒳`*) GEX Pure Crystal Dish PON For Small Dogs - 30 Days Just put it in the dish! "Dish PON" is an antibacterial ceramic that suppresses slime in the dish and inhibits the growth of bacteria, keeping the water clean. Simply put it in the water dish to inhibit the growth of bacteria, suppress slime in the dish, and keep the water clean. If you have any questions, please feel free to comment.