Dog lice are sensitive to odors. You can cut orange peel into fine pieces and apply it on your dog. You can also use special medicine or shower gel to kill lice. Lice can survive on humans, so when you find that your dog has lice, you must treat it promptly. It is best to use professional insecticide spray. Pay attention to dog hygiene, bathe your dog regularly, and deworm your dog on time. , try not to take your dog to dirty places, especially grass.