This is a solid shampoo bar for your dog, the neem oil, citronella and tea tree oil will help to repel fleas and ticks. Neem oil also promotes a healthy shiny coat and problem-free skin. No matter if it is a fungus (ringworm), mites or other biting insects neem oil will help your dog. Use like any other shampoo lathering up between your hands and apply on the wet coat. If you can leave the shampoo on for a few minutes it will increase effectiveness. This product contains only a small amount of essential oils however it should not be ingested and also not be used on puppies, pregnant dogs and very small dogs. Please make sure all the shampoo is rinsed off.