Were you able to find the right 4 Providers within janitorial ? If you're also a provider of janitorial and you're not featured in the business directory yet, you can always Add an entry for free.
The results list for janitorial in Palo Alto. You can find the best janitorial vendors and providers in Palo Alto in the Palo Alto Business Directory. Currently there are 4 companies registered in the Palo Alto business directory under janitorial.