4. Collect garbage
Teaching your dog to collect garbage is similar to teaching him how to play fetch.
Next time you take your dog for a walk, take some tissues or pieces of paper with you. Take him to a wide open space, and then throw one tissue into the air.
Command your dog to fetch the tissue and bring it back to you. If your dog does not yet know how to fetch, start by pointing to the item you want him to bring, and repeat the command. If he does not respond, walk over to the item with a treat in your hand so that your dog will follow you. Guide him towards the item or pick it up and offer it to him until he grasps it in his mouth.
After your dog masters holding the item in his mouth, start moving away from your dog slowly while commanding him to stay. After you have moved back at least 10 feet, call your dog towards you. Give him a treat only if he returns with the item in his mouth. Only command your dog to fetch your own garbage to avoid sharp items and harmful chemicals.