In the past, you may have been satisfied with your own window-cleaning efforts at home or in the office. But when it comes to cleaning high rise building windows, the old squeegee and bucket falls short of this tall order. High rise window cleaning is a dangerous gig, and should be left to the professionals. There are a few factors that you need to consider with this particular job, such as professional window cleaning equipment, and crucially, extensive safety equipment and training; dangling from a 35th storey window is not something to be pondered lightly. So, who do you choose for the job? There are many companies providing such a service, but, as with any other business service, it's important to sort the amateurs from the pros.