When you're looking for a toy for bored dogs who have mastered the simpler dog treat puzzles, this engaging LEVEL 3 advanced interactive treat puzzle from Nina Ottosson by Outward Hound is the perfect next step! The Dog Twister interactive dog puzzle toy features nine treat drawers for dog treats which are secured in place with nine white tabs. Just simply place the treats in the drawers, slide them in, and lock the white drawer tabs for an added sequential step challenge. Your pup will enjoy pawing, sniffing, and nudging around to reveal the hidden tasty rewards! The Dog Twister puzzle dog toy is made of durable BPA, PVC & phthalate-free material that you can feel safe using with your furry friend. Easy to clean with warm water and soap between uses.