Flexi-Edge Floor & Wall Duster from ecloth.com.  This little helper has an extender for little ole me.  You can wash the head & it only costs $24.99.
{"Image Orientation": "Horizontal (normal)", "Image ExifOffset": "38", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "960", "EXIF ExifImageLength": "960"}