You can place the Catnip Ball anywhere, and then Catnip Ball can attract cats to lick, but you don't need to do anything. The back of the Catnip Ball has designed the sticky patch, thus can be pasted on the wall. Cat catnip balls can play with your pet, which is a nice entertainment for cats, bringing your cats more funny play time. Features - Color: Grey, Blue -Material:Plastic, Catnip - Size: 6.00X6.00X3.50cm/2.36X2.36X1.38in -The indoor Catnip Ball is made of substance, no chemical additives contained. -The cat Catnip Ball can easily stick to the wall or other surfaces with strong viscous force. -Catnip Ball toy can effective attractants to get lounging cats up and moving. It is very funny. -Catnip can effectively reduce cat’s and tartar, freshen breath and improve cat oral health. -The catnip ball is not fixed, and it can be rotated up and down. Best gift to your lovely pet! Package list: 6 x Catnip Ball Toys 6 x Double Sided Adhesive Tapes