I thought I had replied to this but I guess not
Here is a great natural flea shampoo:
Collect a batch of citrus fruit. Oranges, lemons, grapefruit, limes, they
[font=Arial,Helvetica][size=-1]all work, and I've used them in combination.[/size][/font]
[font=Arial,Helvetica][size=-1] Squeeze out the juice (fresh orange juice is wonderful stuff). It would[/size][/font]
[font=Arial,Helvetica][size=-1]probably be a good idea to remove all of the inside pulp, but it's a lot[/size][/font]
[font=Arial,Helvetica][size=-1]more work, and I don't bother.[/size][/font]
[font=Arial,Helvetica][size=-1] Put all of your squeezed-out rinds in a big pot, and fill it with water.[/size][/font]
[font=Arial,Helvetica][size=-1]Bring it to a boil, then turn down the heat and simmer for several hours.[/size][/font]
[font=Arial,Helvetica][size=-1]I have turned it off and let it sit when leaving the house, then turned it[/size][/font]
[font=Arial,Helvetica][size=-1]back on.[/size][/font]
[font=Arial,Helvetica][size=-1] When the rinds have reached a pretty limp, squishy state, scoop them up[/size][/font]
[font=Arial,Helvetica][size=-1]and mash them to sqeeze out as much liquid as possible. Return that liquid[/size][/font]
[font=Arial,Helvetica][size=-1]to the big pot, and continue to simmer for a few more hours, allowing the[/size][/font]
[font=Arial,Helvetica][size=-1]liquid to cook down to some degree. Cool the liquid, and pour through a[/size][/font]
[font=Arial,Helvetica][size=-1]fine strainer or cheesecloth to remove the pulp. Bottle it up and[/size][/font]
[font=Arial,Helvetica][size=-1]refrigerate. In case you end up with more than you can use in a reasonable[/size][/font]
[font=Arial,Helvetica][size=-1]time, the stuff freezes well, and works fine when defrosted. (Remember,[/size][/font]
[font=Arial,Helvetica][size=-1]this stuff doesn't have "preservatives.")[/size][/font] [font=Arial,Helvetica][size=-1] We add a quarter of a cup or so to the dog's bathwater when we mix up the[/size][/font]
[font=Arial,Helvetica][size=-1]shampoo concentrate. It's never caused a problem for any of our dogs, does[/size][/font]
[font=Arial,Helvetica][size=-1]not stain coats, is NOT sticky and kills fleas on contact. I would doubt[/size][/font]
[font=Arial,Helvetica][size=-1]that there would be any residual action -- there rarely is with organic[/size][/font]
[font=Arial,Helvetica][size=-1]pesticides.[/size][/font]
[font=Arial,Helvetica][size=-1]Jeri Jennings, NorthStar Dalmatians[/size][/font]
http://www.touchmoon.com/dotters/deflea.html
I've been using it for a few years with my fosters and mill rescue dogs.
Also, as for flea medications, it know and published, so I have no qualms about saying that Ivermectin can and does cause death in COLLIES, so it is something to avoid with a breed of that nature.
Personally, and its my own decision, I stay away from the product totally due to this fact, no matter what breed or mix I may have at the house at any given time.
Here's a general google search to back what I've said about the product - and I can say that YES, I have seen the outcome (once) of a Rough Coated Collie under the treatment of said medication.
http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=ivermectin+and+collies&spell=1