A very small amount of garlic in their food or garlic tabs for dogs...Also, sprinkle nutritional yeast on their food. Dogs love the taste of this and it's good for them. Use Minksheen shampoo or a similar shampoo with natural insect repellant when you know they're going to be outside a lot, and spray them down with some natural insect repellant like rosemary and lemon seeped in hot water for 15 hours, then placed in a glass jar. Put in a spray bottle as needed and spray them before they go out. This will help keep mosquitoes, fleas, and other insects away from them.
