A good way to get rid of fleas in your house is to make a homemade flea trap using a bowl of water and dish soap.
Take a bowl or pie plate and put some water in it and then put some dish soap in the water and then place either a candle in the middle of the pie plate or bowl or set another light source above the homemade flea trap.
The light will attract the fleas to the trap and the fleas will drown in the soap and water.
If you have carpet in your house you can take table salt and sprinkle the salt all over your carpet and let the salt sit in your carpet for a couple weeks and then vacuum the carpet.
The salt dehydrates the fleas and kills them overtime.
You should also treat your animals and yard for fleas to prevent further infestation of fleas in your home.
A good way to kill fleas on your dog or cat is to take them into get a flea bath where they'll be dipped in a chemical to kill the fleas and it really does work.