As far as pet pests go I've only used it for de-worming. The not breathing DE in or getting it in the eyes worried me. That and King was so severely allergic to fleas. (We used Frontline Plus on him.)
I DO use it though around the perimeter of the house. about two inch spread near the foundation.
If you use the DE in their fur (for major infestations) do beware of it drying out the skin. I'd say leave it in for a day then throughly wash it out.
Oh... and DE works GREAT on fire ants!
Also, buy a flea collar and cut it up and put it in the vacuum (In the bag if it's a bag vacuum.) Make sure to vacuum two or three times a day.
You can also put a light on the floor and a small dish of soapy water. The fleas will go right to it. There's details online for making successful versions. (make sure the pets can't get to it of course.) (Or you replace the soapy water with a pan of DE. just an idea.)
Oh and if you use the DE inside i suggest just putting it around the baseboards. Vacuuming it up can spread it into the air.
Originally Posted by binka_nugget
Let nature guide your actions and you will never have to worry if you did the right thing. ~ crow_noir
The pet world excels where the human world is lacking; sterilization and adoption. ~ crow_noir
Please, if your dog is arthritic look into getting it Elk Velvet Antler. Look up my posts on it, PM me, or look it up on a search engine; but please if you love your dog and want it to live many more years consider this option. I've seen so many posts on here about dogs needlessly suffering. I can't make a new post about EVA every time so this plea is going here. EVA also helps with other ailments such as anemia.