Duties and Responsibilities. Other duties may be assigned. however, the core duties of this position are as follows. Residential & Commercial Services. o Cleaning of interior & exterior windows, screens, and windows sills. o Power washing. o Gutter cleaning (Use of leaf blower). o Work at ground level as well as use ladders to reach upper floor windows. o Use typical extension poles or water-fed extension pole and water purification system. o Use...