Move your sofa to a location that does not receive a large amount of direct sunlight. If moving your sofa isn't an option, keep windows and glass doors covered with curtains or blinds during the day. Sunlight has a bleaching effect on the color of your sofa.
Spray your couch with a chemical upholstery protectant safe for use around humans and pets. Chemical protectants keep stains from setting into the sofa's fibers.
Cover the sofa with a slipcover. A cloth slipcover protects your sofa from dirt and pet hair while a plastic slipcover protects your sofa from liquid spills and toddler accidents. Sofa covers come in solid colors or various attractive patterns.
Wrap your sofa in blankets if you have to move it. This protects the upholstery from rips and dirt during transit. Secure the blankets with twine.