Fleas are similar to cockroaches in that
they adapt to their environment. They become stronger and more immune to the
popular chemical products with each generation.
Most of the fleas are
living in your pet's environment, rather than in its fur. (Every flea
found on your pet may mean that there are approximately 30 more living in
your home.)
A single flea can lay as many as 60 eggs per day. The lifespan of a flea is about 90 days. Controlling fleas does require some effort, but there are safer and effective ways to control fleas than several well-known commercial flea control products.
Even if all the ingredients in a flea repellent product are natural, this doesn't ensure that they won't be toxic to your pet. For instance, d'Limonene, which is derived from citrus peels and found in many natural anti-flea products, can be highly toxic to cats. Herbal flea collars, though they don't contain the poisons that conventional flea collars do, come with the same warning: do not let children play with the collar. If it's not good for your child, why would it be good for your pet?
It is advisable to read product labels carefully. For example, one line of supposedly natural flea sprays and dips contains "all natural synthetic Pyrethrin." Pyrethrins are insecticides derived from the African chrysanthemum (Pyrethrum). Pyrethroids are synthetic derivatives of pyrethrins. Both are commonly used in conventional preparations which make the product sound innocent because it's derived from a flower. But pyrethrins alone can be toxic to the animal and pyrethroids expose your animal to more chemicals.
Other natural ingredients known to cause allergic reactions or have toxic effects in some animals include Tea Tree (Melaleuca alternifolia) oil and Pennyroyal oil.
Cat owners take special note: Cats should not be given any essential oils, period.
The use of essential oils with cats is a potentially volatile combination. Cats do not efficiently metabolize essential oils and their use can lead to symptoms of toxicity. In addition to essential oils, cats have known metabolic sensitivities to certain herbal preparations and allopathic medications. Because the cat's body does not efficiently excrete essential oils, they can build up to toxic levels. Symptoms of toxicity include vomiting, dizziness, clumsiness, lack of appetite, lack of energy and shock. In addition, cats have very thin, delicate skin. Essential oils are absorbed rapidly into their skin and enter the bloodstream, overwhelming their systems. Cats dislike strong odors and generally keep away from strong scents -- even highly diluted essential oils.
Many people find that they can use essential oils on their cats with no obvious adverse effects. Although one or more applications of an essential oil product or blend may not cause immediate harm, the effects of essential oils can be cumulative and manifest themselves at a later date in the form of toxicity for which owners and vets often can find no attributable cause.
So what is the alternative?
Flea Away®
