Take a 3 x 2mtr extension pole remove the end cap and squeeze a 12" flat aluminium mop frame with Velcro strips onto the end, stick a dry waffle microfiber cloth onto the Velcro strips and proceed to wipe the cloth against the surface you want to dedust, for removing light soils and sticky cobwebs just use a lightly damp waffle microfiber cloth, if you have large areas to clean and dust just have enough cloths with you to carry out the work.