Hi, new here, got a new RR 10 week old puppy, show quality, so this topic is very relevant!!
I live in acreage, sunshine coast, Qld and had chooks for a few years now and no flea problem there (though chook fleas are not the same as dog's). I use DE, food grade in my chooks once in a while, also in their sleep areas. I am for the natural thing if possible, so I wonder if this works on dogs too? DE is not toxic, but make sure you only try the food grade stuff, not the one used as a stabilizer in the swimming pools. Has anyone tried it, or came across it before? I will let you know how I go if I try it on my puppy myself. She has only been home a couple of days, so no urgent need for me yet ...
BTW, I learnt about this stuff after attending a 'how to raise chooks organically' course, that is what they recommended, and I think they were using it in their dogs as well, have to check it, will e-mail the instructor ...