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Depending on the size and number of the windows and work required, cleaning companies can charge $2 to $7 per pane. Likewise, the cost may vary for residential and commercial properties.

To make cleaning windows at home easy, ensure that you the right tools like soft-bristled brush, polyester sponge, squeegees and an all-purpose cleaner.

No, you should make sure that the services hired offer worker's compensation to their cleaners. It may not seem necessary, but it always pays better to safeguard your and their financial interests.

You can get quotes from the window cleaning service's website. If they don't have online presence, then you can call them up, ask for a quote and negotiate prices.

Research online to know the best window cleaning services in your city. Consider factors like price per window, types of services offered and consumer reviews.

Before hiring a window cleaning service, ensure to inquire about their formal training, licenses and also gain reliable information about their services through references.