Cleaning your windows is a job that should optimally be done twice a year. But depending on the size of your home, cleaning all of your windows can end up becoming quite the production.If windows aren't cleaned on a regular bases, then things like mould can build up on the glass and may create health issues too.If your selling your home, perspective buyers take note of the homes cleanliness. While it's possible to do it yourself, buying the right supplies alone can end up the same as the cost of hiring a pro.A reputable pro will have the proper ladders, cleaning solutions, and most importantly, squeegees that will make your windows spotless. Also, keep in mind, doing a good job on windows requires standing on a ladder while using multiple tools to clean. This can be a dangerous prospect for some homeowners, and worthy of calling a pro by itself.