Using all-natural products to remove fleas when possible is one way to remove fleas from carpeting. Salt sprinkled on the carpet dries out fleas and flea eggs and will safely kill the insects within 12 to 48 hours.
In order to use salt effectively, run enough salt to cover the carpet through a blender or food processor and grind it into a fine powder. Cover the carpet completely, taking care to get the salt into corners and close to floor boards. Leave it on for up to 48 hours and vacuum completely.
Be careful not to leave the salt on the carpet any longer than 48 hours. Salt is a natural moisture attractant, meaning that if it stays on the carpet for too long, it will pull moisture out of the air, making the carpet wet. Never use salt on pets.