When I was a kid, we went on vacation for a week and boarded our cat at the vet. As soon as we got home and walked in the door of our house, we were attacked by fleas! We had to call an exterminator before we could spend anytime in the house. Those critters multiply in the carpet. That was forever ago. I would think that now there are ways for exterminators to get rid of fleas using some safe stuff. I know when I used an exterminator this year, I made it clear that we couldn't have any harmful chemicals in the house because of my dogs and grand babies. They assured me that they only used safe stuff. I would call an exterminator that does environmentally safe extermination and see if they can treat for fleas. Good luck!