don't be tricked

Have you received a bunch of impossible, competitive quotes for janitorial services?  Don't let them bamboozle you with a bunch of hocus pocus.
Compare the quotes you have received and take the time to understand them.  Learning exactly what products and procedures they use will prevent you from being tricked into a service that offers less then the quality that you expect. 
Don't be fooled by companies that are big on talk but not delivery.  Proper evaluation will help you avoid hidden tricks.  Take a better look at the company you are thinking of hiring, don't just choose a big name.  Pick a quality company that has been around for awhile and keep your business running smoothly.