Have you tried frontline or advantage??? Even if you have fleas they will die once they bite the indoor dogs. ON another note, you need to go to walmart and get flea bombs...
Vaccume the entire house good , under heaters, under sofas ( they like to hide there) along wall edges etc..
Prop the sofa up along with any other furniture that is close to the ground , you can use wood or books or bricks or even lean it against the wall..
Next take your sofa , love seat and chair cushions and make like a teepee out of them so that the flea bom stuff can get inside your sofa...
Id use one flea bomb per room..
Take your animals outside for 4 hours, before you let them back in the house treat them with frontline or advantage, what ever your vet recommends,I know where I live you can buy frontline at some dog shops.. **please do not use the knock off stuff *** it doesnt work!!
Air out your house a bit before you let the dogs back in , any remaining fleas should die from the frontline .
My ex husband was a property manager, he has had to do this several times for tenants.. it works...
your poor babies are suffering with flea bites, its very painful for them to have flea's and extremly uncomfortable