Safest heartworm medications to use If you live in an area that is high risk for Heartworms, treating for them is a must. Consider these alternatives to the harsh chemicals and use a Holistic approach by feeding your dog raw Garlic mixed in raw hamburger. Garlic is a natural repellant for insects.
Also success using Black Walnut Capsules has been shown.
Remember conditions such as temperature, humidity and Mosquito variety must be just so in order for heartworms to develop.