| Business | Phone |
| Ultra Clean Mt. Vernon 62864 | (618) 242-5954 |
| Service Master Co 16363 N Il Highway 37, Mt. Vernon 62864 | (618) 244-9596 |
| D & D Cleaning Svc 14 Westbrook Dr, Mt. Vernon 62864 | (618) 244-7968 |
| Mt Vernon Janitorial Svc 12624 E Il Highway 148, Mt. Vernon 62864 | (618) 244-1110 |
| Mt Vernon Janitorial Svc Rr 3, Mt. Vernon 62864 | (618) 244-1110 |