Give the dog a bath using medicated shampoo. The veterinarian's office can supply you with an antifungal medicated shampoo. The fungus spores can live in the dog's fur, making it difficult to eradicate ringworm, particularly in more serious cases. So a medicated shampoo is recommended twice a week for 2 consecutive weeks. The first shampoo should be performed when the dog is started on prescription medication. Most medicated shampoos will need to be left on the dog's skin for about 10 minutes to be effective.
4 Launder all bedding, dog toys, blankets, dog clothes, collars and other items