Please help, i cant get rid of my dogs flea's????? xx?

hi, i have a 3 year old staffy, lab and no matter what i do i cant seem to get rid of the flea's, she wears a flea coller, i was her in flea shampoo and i have put drops in on her, i have also used the spays. they seem to wirk for a couple of days then they come back, i think they are livin in my furniture, i have used the furniture stuff, i do walk her in areas with other dogs and also with a lot of gr, but dont want to stop this because she loves it! please help they are drivin me crazy, i cant wear skirts anymore i have so many bite!!! PLEASE HELP!!!