Started brushing my dogs and cats with baking soda about 2 years ago. I originally did this as a dry bath. It definitely helped with the smell. But I have also noticed that I have not seen any fleas in this time. Usually I have to treat every year. I brush them once a week. It's worth a try right?
I have a beautiful conure, but the lady on the first floor in our apartment building has 3 cats. They must have been loaded with fleas, because I brought them into my own home after they hitched a ride on my feet. The landlord knocked on my door and handed me a "bomb" to kill the fleas. I don't want to expose my little parrot to chemicals so I phoned her vet. I was told to use Arm & Hammer. Get a few boxes and sprinkle it everywhere. The fleas are drawn to the salty taste of it and the next day I could see their bodies were completely flat. They had dehydrated and died. Of course, yours truly tasted like a potato chip, but that didn't stop me from doing it again in one week. After vacuuming up all the Arm & Hammer, I never saw another flea. It worked great, was inexpensive, safe and only caused a tiny bit of inconvenience.