The sugar contains catnip, isinglass and trace element, good for cat's health. Catnip can attract cats to taste the sugar, and make them excited, help them spit hair ball. Yellow-fin tuna isinglass is good for cat's eyes and brain, help them grow healthily. Sticker on the bottom make the sugar ball can be stick everywhere, convenient for them to lick. With lid on the sugar ball, when it is not in use, you can cover it to prevent ants and expired.