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 $30, you get up to 1,000 square feet of residential window or gutter cleaning from Badger Window Cleaning LLC (an $80 value). The service area includes residences in Green Bay, Appleton, Oshkosh, Shawano, Legend Lake, and Door County.

Badger Window Cleaning’s streak-squelching, clog-unclogging employees buff residential exteriors to a glitteresque sparkle with efficacious window and gutter tending. A sudsy elixir swirls over two-faced windowpanes, relieving exteriors of caked-on dirt and interiors of sonnets penned in crayon or Easy Cheese. The thorough washing crew slides open windows to scrub interior mechanisms and spritzes grungy screens with a duo of specialized solutions. Probing hands remove detritus clogs from gutters and downspouts to ensure the system properly redirects water flow to refill the defensive moats that ward off stray neighborhood pigs. The three- to four-hour service can continue to cover additional square footage for an additional fee, which varies by residence and lawn plushness.