My workplace registered with my valet some time ago but I only tried it recently and was quite impressed. You register and pay for your dry cleaning online, noting any special requirements and garment types. You leave the items in a designated area and they come and pick them up, and return them within 2 business days (depending on time of order being placed). They even provide a personal garment bag for you to leave your items in and have them returned. A simple, painless process. They also offer other services including alterations, but haven't tried these myself.

Approximate cost: $pants from 8.80