Things You'll Need
Liquid dish soap
Deep cleaning your couch every few months is important to remove dust, body oils, and other contaminants. You should also spot clean the couch as soon as you notice stains. Liquid stains, such as syrup, can be particularly pervasive because they can soak deep into the upholstery. Prevent this by removing the stain as soon as possible. Use cleaning solutions that will counteract the stickiness of the syrup and remove the smell.
Soak up as much of the syrup as possible with paper towels by gently blotting the area until no more syrup comes off the couch. Don't press the syrup into the couch or rub it; this will only spread the stain.
Mix 1 tbsp. liquid dish soap with 2 cups cool water.
Dab the solution directly onto the stain with a clean cloth. Work from the edges of the stain toward the center to ensure you don't spread the stain.
Blot the area with a cloth soaked in water to rinse out the soap residue. Blot the area with a cloth until it is dry.
Soak up as much of the cough syrup as possible with clean cloths. Blot carefully so you don't press the syrup deeper into the upholstery.
Mix 1 tbsp. liquid dish soap with 1 tbsp. white vinegar and 2 cups cool water.
Dab the solution onto the stain, working from the edges toward the center. Gently brush the stain with a soft-bristled brush until the couch is clean or until the stain is as light as possible.
Dab rubbing alcohol onto the stain.
Mix 1 tsp. oxygen bleach with 2 tbsp. water, if the stain is still visible. Apply the solution to the area with an eyedropper until the stain is gone. Immediately rinse the area with a damp cloth. Blot the area with a dry cloth.
Apply a small amount of the oxygen bleach to a hidden area to make sure it is safe for the couch's fabric.