Here are some natural remedies for fleas.
Repellent sprays - According to the Natural Resources Defense Council, based in New York, a safer alternative for flea management can be made with essential oils of cedarwood, lemongrass, peppermint, rosemary, and thyme. They emphasize avoiding pennyroyal oil which can cause seizures and death in animals. Also be wary of products containing oils of citrus, d-limonene, tea tree, lavender, geranium, linalool, bay, eucalyptus, and rue; they have been associated with allergic reactions in people and severe reactions in dogs.
Diatomaceous earth - Can effectively kill fleas by penetrating the waxy coating on their exoskeletons and causing them to dehydrate. It can be found at herb outlets and garden shops. Sprinkle it on clean pet bedding and on carpets and floors.
A lemon rinse after shampooing - can repel fleas. Make the rinse by soaking a sliced lemon in a pint of hot water, letting it steep overnight. Remove the lemon and any stray pulp, and sponge the lemon water onto your dog's skin. Let it air dry. Repeat daily if necessary.
Keeping grass and shrubbery short - in areas where your dog spends time helps reduce a flea problem, the Natural Resources Defense Council states. Evict fleas from your home by vacuuming frequently and throwing out the vacuum cleaner bags immediately, and by washing pet bedding in hot water weekly.
Be sure to check with your veterinarian before beginning any flea
For a rundown on the ingredients in flea products,
visit the NRDC's Green Paws directory.