Unless you have a very minor flea infestation, it almost always takes a few months to get rid of it no matter what you do. It doesn’t matter what product you use, or how many times you wash your pet. The reason it takes so long is due to the “flea development window”. If you understand this concept then you will save yourself a lot of frustration.

The flea development window is based around basic flea biology. Adult female fleas lay around 40 eggs per day. These fall off your pet into the environment, landing in areas like your house, car, and back yard. These eggs hatch in 1 to 10 days, and become larvae. These larvae then develop into pupae in 5 to 11 days. Fleas will remain in their pupa for anywhere from 7 to 174 days.

Flea control, for the most part, is concerned with killing adult fleas. If you are using any of the flea control products that I recommend here, then they are likely to kill 99.9% of the fleas on your pet. Unfortunately, they does nothing to prevent the development of eggs, larvae and pupae already in the environment. These will continue to develop and hatch, then jump onto your pet.

The adult stage of the flea is the “window” – the point in the flea’s life cycle that we can effectively intervene and reduce flea numbers.

Have you ever had a situation where you used flea control, and the problem seemed to get worse instead of better? You might think that it is a giant conspiracy theory, and the drug companies are lacing their products with flea eggs to keep you buying their product. Unfortunately the truth is much less exciting. This is the flea development window at work.

Sometimes the flea population is on the verge of explosion, with heaps and heaps of flea eggs, larvae and pupae in the environment. At this stage, applying flea control product is too late to stop the onslaught. The product will kill all the fleas on your pet, but all of those fleas in the environment will hatch and jump onto your pet over the next 3 weeks to 6 months.

You might be thinking “How does knowing about this change what I need to do for my pet?”. It all boils down to this: we can’t effectively kill all of the stages of the flea life cycle. We can only really do anything about the adult fleas. Every time a flea survives on your pet long enough to lay eggs, you are going to be dealing with another 50 or more fleas in a few weeks to months.

This really highlights the importance of using flea control on every pet in your household, every month, every time. Any lapses in your flea control strategy and you will have to deal with another few months worth of fleas on your pet.

Every day you delay in treating your pet is another 40-50 fleas (or much more!) that you will have to deal with in the future. Save your self the headache, buy your pets some flea control today!

To a flea free pet!

Dr. Simon

Photo: http://www.flickr.com/photos/funkybug/

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