Check customer reviews online of each one and see what kind of feedback they've gotten from previous clients. No matter what type of service you choose, it's important to get a quality commercial cleaner with expertise in your particular industry (to make sure they know what needs done). But (it's not) just about having clean things - it's also important to cultivate a culture of cleanliness among your staff! Set ground rules that everyone must follow when it comes to tidiness and personal hygiene. Ask questions such as: are they efficient? Do they do a good job? What prices do they charge? Also, try looking for local cleaning companies in your area and check out their websites to get an idea of the services they offer and their qualifications.
clean group