
While the provided search results indicate that guides exist for washing throw pillows, the specific instructional content is not included in the text. Therefore, the following answer is based on general best practices for textile care.
The feasibility of washing sofa pillows in a washing machine is contingent upon several critical factors, primarily the materials of the pillow's cover and its internal filling. It is not a universally applicable cleaning method. The most crucial first step is to locate and consult the care tag on the pillow. This label contains manufacturer-specific instructions that should be prioritized over any general advice to prevent irreversible damage.
Many sofa pillows are designed with a removable cover and a separate inner pillow, or insert. In these cases, the cover is often machine washable. The typical procedure involves unzipping the cover, pretreating any stains, and washing it on a gentle cycle with cold water and a mild detergent. The insert, however, may have different cleaning requirements. Inserts filled with materials like down, feathers, or polyester fiberfill can sometimes be machine washed, but foam inserts, including memory foam, should never be submerged in water or placed in a washing machine, as this can cause them to disintegrate.
For pillows without a removable cover, the entire unit must be assessed for machine washability. If the care tag permits machine washing, it is advisable to wash two pillows at a time to balance the load in the washing machine. A gentle or delicate cycle with a minimal amount of mild liquid detergent is recommended, as powdered detergents may not dissolve fully and can leave a residue. An extra rinse cycle can help ensure all soap is removed. For drying, pillows should generally be placed in a dryer on a low or no-heat setting, accompanied by wool dryer balls or clean tennis balls to help fluff the filling and prevent clumping. Thorough drying is essential to prevent the growth of mold or mildew within the filling. If the care tag indicates otherwise, or for pillows with delicate materials, spot cleaning is the safest alternative.


