This product can be adsorbed on the floor, doors and Windows are arbitrary smooth plane. When the cat is playing, it can gently force the toy to rotate around freely, which can effectively improve the cat's intelligence in the process of learning to use the toy. Each set comes with 1 Light Balls +2 Catnip Balls. You can choose to use both of these products. The product is made of soft TPR, which will not cause any harm to the cat. The soft bump can be used by the cat to rub its face or grind its teeth. The wind blade of the product is also soft, which can clean the tooth dirt of the cat and ensure the oral health of the cat during the process of using the toy. The soft and flexible TPR material will not cause damage to the toy when the cat bites. You can smear special toothpaste or food luring agent on the raised spot to increase the cat's interest and increase the catUse effect of molar teeth. Extensive use tests have proven that cats will grow to like the toy over the course of use and will be relievedCats' worries raise their IQ.