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 $49, you get $100 worth of residential window, gutter, or pressure cleaning from Pearl Window Cleaning. A $15 fee applies for clients 25 miles outside Memphis city limits.

The domicile purifiers at Pearl Window Cleaning rescue windows, gutters, and driveways from the unsightly clutches of grime. Window wipers pump ion-free H20 through the Reach and Wash System to ensure smear-free windows ($10/window) that sparkle like a politician with an impeccable campaign history. Gutters sigh with relief as technicians expel interior and exterior grime with pressure washers, removing all debris without leaving a mess ($70/gutter). More than eaves and bad-guy paper targets two stories high, the dirt abolishers can also spray their pressure-powered water guns at driveways ($100), walkways ($50), and residential homes ($0.50/sq. ft.) to expel grungy spots with ease. Though the values listed are accurate, prices may vary depending on the size of an area or if it's an active volcano.