Fleas become stronger and more immune to chemicals with each generation, toxic chemicals must be repeatedly applied. And, although a product may claim to be natural, some natural ingredients may cause allergic reactions or have toxic effects in animals.

The first step in flea prevention lies in maintaining your dog or cat's health. Skin condition is an indicator of an animal's overall health and an important factor in flea control. By feeding your animals a high-quality, natural diet free of additives and preservatives, you improve their health and dramatically increase their protection from fleas.Nutritional supplements can help too.

Effective flea control programs employ a multifaceted approach that treats the environment as well as the animal. The following are nontoxic and natural ways that you can help control fleas:

• Black walnut is a very effective flea repellent for dogs when given orally several times a week. It can be purchased in capsules or in liquid form. Give only the minimum effective dose because it can be toxic in higher doses.
• Flea treats are another supplement that can be given to repel fleas—the main ingredient is B vitamins.
• A fine-toothed flea comb is essential and should be used daily to catch fleas. Keep a bowl of soapy water on hand and dip the comb into it after each sweep, or catch the fleas, put them in a container, and then freeze it.

• Vacuum rugs and furniture frequently and launder animals' bed covers weekly, if necessary, during the flea season. Flea eggs can be collected by vacuuming but can still hatch in the bag, which should be sealed and thrown away, or put in the freezer in a plastic bag after each vacuuming.

• Set eucalyptus leaves inside and out because fleas can't stand the smell. Buy bunches at a craft store, cut them up and place leaves and stems in open glass jars. Set one or two in each room of the house. Also, hang pod-filled socks from branches around the yard.

• Diatomaceous earth, a powder composed of the fossilized remains of single-celled algae, can be sprinkled on carpets to eliminate fleas safely. Diatomaceous earth is harmless if ingested but should not be inhaled. 

Products containing beneficial nematodes (microorganisms that eat flea larvae) can be sprayed on lawns and, unlike many toxic treatments, are perfectly safe for animals, birds, and humans, as well as "friendly" garden dwellers, such as earthworms and ladybugs. Gentle herbal shampoos are also effective and can be used as often as once a week, although too-frequent bathing can dry out animals' skin. 

See more safe guides and ideas from professionals Auckland Flea Control for reliable assistance