Unwashed windows accumulate layers of grime that can build up and block out the sun, causing light-hungry houseplants to turn to TV sets and birthday cakes. Keep the planted masses happy with today's Groupon: for $40, you get $80 worth of window cleaning plus 20% off additional services from Clearview Window Washing Service. This Groupon is valid within 20 miles of the center of Lodi.

The uniformed, experienced washers at Clearview Window Washing purge glass, sills, screens, and tracks of dirt with expert precision ($80 for approximately 5–7 windows inside and out). The cleaning commences with a thorough screen absolution, removing and marking each screen with invisible biodegradable soap tattoos. Professional purgers then attack the outside windows, wielding a soft strip washer, a concentrated solution of Glisten, and a modicum of elbow grease. A wide scraper stretches out its metallic arms to expunge paint overspray, bug marks, sap, and windows' happy tears before a second coat of Glisten works to give panes a glowing shimmer. Window tidiers repeat the process on the inside, where they also pressure windowsills and tracks to divulge their dirty secrets. An exfoliating touchup of steel wool and cooling cucumbers on both surfaces ends windows’ spa experience, leaving them sparkling.