When dogs scavenge for food, owners must stop them promptly. The tone of criticism should be brief and strong; nagging criticism may cause the dog to mistakenly think you are encouraging it. Pay attention to the leash tension; for dogs with a strong appetite reflex, you can pull a little harder. In addition, praising the dog must be timely.　　　　Another point owners should note is that refusal training should start from daily details. When feeding the dog, do not let it eat food dropped on the ground, so as not to cultivate the habit of scavenging from the ground.　　　　For dogs with good basic obedience training, several sessions of such training will be effective. But dogs have a strong desire for food; for dogs with a strong appetite reflex and those with poor obedience training foundations, owners can use the special "sugar-coated bullet" method while training with the above methods.