How to remove dust from the window runners (tracks)

A forgotten area is often the window runners. Dust, bugs and other debris collect in window tracks and if left in sliding windows too long this could lead to mould growing in the tracks. To clean window tracks vacuum with your vacuum nozzle and brush attachment. If you have no brush attachment, use a soft bristled painting brush to brush the dust towards the vacuum nozzle. 
If the track is soiled spray a mild detergent cleaner into the track and let soak for a short time. Than using a hard bristled painting brush, brush the dirt lose in the runners and wipe the runners with a cleaning cloth. In the corners you may need to use a cotton bud to remove the dirt. 

Note: If the runners are really narrow that you can not use your finger to guide the cleaning cloth, use the end of a screwdriver which is wrapped with the cleaning cloth, and push the dirt to one side where it can be vacuumed.