Promotional value expires 90 days after purchase. Amount paid never expires. Appointment required. Limit 1 per person, may buy 1 additional as a gift. Limit 1 per household. Must use promotional value in 1 visit. Valid only for option purchased. All goods or services must be used by the same person. Valid for up to two-story locations only. Screens must be removed prior to cleaning. Vinyl windows excluded. Mileage fee may apply for work done over 20 miles outside Sioux Falls. Windows must be accessible from the ground by pole. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings