When I was a little girl, my parents used to get Cedar tree limbs and put them in our home. Under the beds, couches, in corners, in every room of the house and leave them there until the limbs die. Open all the windows and doors, so that the fleas can get out. This does not kill them, it just makes them leave. After a couple of days, put limbs outside around the doors and windows. I am having a problem with fleas also, but I have been unable to locate a Cedar tree in my area. I am still looking tough....lol
Hope that this helps someone.
Dorothy