Using this dog wishbone chew toy is super easy. Just give it to your dog and let them start chewing. It's designed to keep your dog engaged, so they can gnaw on the three ends and enjoy the textured surface. When it comes to size, pick the one that suits your dog best. Small for little pups, medium for medium - sized dogs, and large for big breeds. As for maintenance, you can wash it with mild soap and water from time to time to keep it clean. Remember, although it's very durable, keep an eye on your dog while they're chewing. If you notice any signs of damage, it's time to replace the toy. And don't forget, this product is going through a packaging change, so you might get the new or old one.