Question
yes this is out of doors.
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The text above is a follow-up to ...

-----Question-----
I have three small dogs and a cat who acts like a dog which of course means I sometimes have a flea problem. I am absolutely dead set against using any kind of chemicals to control them. But I truly believe that if I play my cards right this year, perhaps as early as spring or even now, there will be something that will get them all before they even hatch. I don't know anything about the Flea cycle outdoors (indoors I am very familiar with). I just know I don't have any now indoors.  How can I keep a good thing going?  While keeping the whole house earth friendly and chemical free?  Thank you.
-----Answer-----
Long Island Gardener at your service, Cydra. You didn't mention whether you have a private residence with a yard/lawn or you are living in a multifamily apartment/condo surrounded by cement.

You did ask about the Flea cycle outdoors.  But I want to confirm this is "outdoors" soil and/or grass that belongs to you, that is under your control, that no one else tends.  Please advise.

Answer
Cutting-edge Flea control centers on a new technology based on a new area called Insect Growth Regulators ("IGRs").

Fleas are exposed to chemicals made by other Fleas that throw the molting process out of whack -- and destroys the
ability to grow up and become an Adult Flea.  The main problem with IGRs has been that deteriorate when exposed to sunlight.  So exterminating your garden, outdoors, to get rid of Fleas becomes a problem.

There's a new product called "Nylar" in final testing. This is a very promising Insect Growth Regulator. Because so far, it appears that Nylar may have solved this problem.  It is more stable when exposed to light.

But it's not on the market yet.

Nematodes work best against Fleas when used in moist, sandy soils.  Tests conducted on lawns and bare, moist soil also showed strong performance.

But you should never resort to Chemicals.

If anything, Chemical pesticides will eradicate all the good things in your garden and possibly spark a Flea population explosion.

My advice is to go with the current Nematode research, and pray for a hot, dry summer to keep Fleas from overpopulating.  See the Dirt Works website (http://www.dirtworks.net/Nematodes.html) for progressive gardening guidance.  Let me know how it goes.  Thanks for writing.