Theresa
My daughter and I got head lice from a beauty salon. It was difficult for us to get rid of them also. We shampooed our hair 3 times a piece. I destroyed everything that I thought might have came in contact with our heads. I got rid of pillows, mattress covers, I bagged all of her stuffed animals and toys for a month. Something or someone in your house is reinfecting your child. I sprayed the upholstrey with the lice spray. You also need to wash the bed linens in hot water and dry them in the dryer. They are saying now that lice are not responding to the over the counter medicine the way they used too. You may need to get a presciption from the doctor. Hope things go well. By the way your local health department can also give you some ideas.