Suits and Tailored Jackets
With tailoring, the risk sits where you can't see it. The lining and the interfacing that holds a lapel's shape can shrink at different rates in water, which is how a jacket ends up bubbled or twisted after a home wash. A solvent clean avoids that. After cleaning, jackets are pressed so the shoulders and lapels sit properly again, and trouser creases are set back in.
One tip. Send both pieces of a suit together, even if only the trousers look dirty. Cleaning them separately over the years can leave a slight color difference between the jacket and trousers.
