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 $50, you get $100 worth of window or gutter cleaning from Enlightened Views in San Carlos. This Groupon covers 100 feet of gutter cleaning or up to 20 3'x5' window panes.

Enlightened Views' owner, Bart Draper, helms a crew of technicians that diligently deterges residential windows and unclogs gutters. During the window-cleaning service, cleaners arrive at the home clad in protective shoe covers to keep surrounding areas clean as they thoroughly cleanse interior windows and sills of dirt, debris, and last season's apple pies’ crusts. Gunky screens emerge unencumbered after the staffers meticulously rinse and dry their surfaces. A pristine cleaning clears up exterior glass, and technicians carefully scour frames and tracks so windows can be opened and shut without cranking the car jack.

The enlightened technicians can also clear congested gutters of leaves and standing water with an annual gutter cleaning. Atop padded ladders, gutter gurus dredge out accumulated gunk, sweep debris from the roof, and inspect for trouble areas or loitering reindeer. Enlightened Views gathers the rubbish to keep yards litter-free and DeLoreans efficiently fueled for time travel.