Promotional value expires 120 days after purchase. Amount paid never expires. We currently service the following counties in Maryland: Montgomery, Frederick, Howard, Anne Arundel, and Prince George's County. We also provide our services for all of Washington, DC and the following counties in Virginia: Arlington and Fairfax County. Does not include cleaning of any screens, sills, tracks, frames, sashes, doors, or skylights. Appointment required. Valid only within 50 miles of zip code 20852. Limit 1 per person. Limit 1 per household. Valid only for option purchased. All goods or services must be used by the same person. 48-hour cancellation notice required. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.