INSTALL ANYWHERE: You can choose the 3M or screw install it. The 3M stickers have a high viscosity and don't leave any marks when removed, so you can stick them anywhere! The screw is more durable than 3M.UNIQUE: The shape of the Catnip Ball is inspired by peas and is designed to make it more comfortable for cats to lick the ball and use the toy for self grooming and massage.Natural Catnip: Infused with natural catnip, these toys tap into cats' instinctive behaviors, promoting physical and mental stimulation. Peppermint balls are approximately 1 inch in diameter and are replaceable.Durable Construction: Made with high-quality Made of ABS and TPE material, these toys are designed to withstand vigorous play and last for an extended period. Very skin friendly, cats won't hurt their skin when using the toy for scratching and massaging. Washable, easy to clean.Easy to Use: With a simple stick-on installation, these toys can be easily set up and repositioned as needed, providing versatility for your cat's playtime.