Symptoms of worms outside the dog's body:

1. The dog may show symptoms such as frequent scratching of the skin, itching of the skin, redness and swelling of the affected area, and pimples on the skin.

2. The food intake increases but is not absorbed, and the dog becomes thinner and thinner.

3. The dog has poor energy, lacks energy and does not like to move. It is easy to cause anemia, causing the mucous membranes of the mouth and eyes to be bloodless.

4. Keep shaking your ears. (If the dog shakes its ears frequently for no reason, it may be infected with mites.)

5. Rub its butt on the ground. (If the dog frequently rubs its butt on the ground, it may be infected with parasites and feels that rubbing the ground can relieve the itching.)

6. Abnormal hair loss or a large number of pustules appear in certain parts of the body. (Observe the dog's body. If there is abnormal hair loss in a certain part, or a large number of pustules on the body, it is also infected with parasites.)

How to deworm the dog externally:

1. Drops: When dropping the medicine, directly separate the fur on the back of the neck, expose the skin, and drop the medicine on it. The medicine is generally effective and kills insects within 24 hours, lasting for 30 days. If insects are already found, it will last for one week. You can add another dose later to strengthen.

2. Spray: Spray directly on the outside of the dog's skin, being careful to avoid the dog's eyes and nose. The spray can also be sprayed on the kennel and the environment where the dog lives.