To avoid future infestations on your couches and other items of furniture make it a habit to vacuum every part and crevice that could contain big fluff bunnies. Warmth attracts insects such as fleas, lice and bed bugs. The more compact an area is the more likely you are to get these insects nesting in your furniture.
Fleas and lice are not fond of detergents and soaps. Using the correct detergent or solvent to clean your couch regularly could kill existing insects and prevent new bugs from coming into the picture.
Sprinkle a specific powder called Diatomaceous Earth in the crevices and cracks of your couches. A face mask is necessary to avoid being poisoned by this powder. The powder should remain on the furniture for at least a day without any disturbances. After the day has passed, vacuum the powder and the deceased insects. Some fleas might remain alive so throw out the powder and insects outside; as far away from the doors and windows.
Scrubbing might be necessary in some cases where larvae are present. Scrubbing with a soft brush will detach the sticky eggs and larvae which will be easier to sweep up or brush off. Vacuuming the larvae without detaching them first will make it difficult to get all of them.