A dirty carpet is like a guilty conscience—it's always nagging you from the background and prevents you from eating off the floor in peace. Expunge lingering crud from your rug with today's Groupon: for $29, you get two rooms of carpet cleaning and a household air purification (an $80 value) from Aerus. Since 1924, when it was established as Electrolux, Aerus has been rejuvenating households nationwide with healthy, eco-friendly cleaning solutions. Today's deal gets two of your home's rooms (200 square feet and under) a thorough floor-fur freshening. As the cleaners clear away each carpet’s gunk, grime, and ancient ruins, Aerus will purge the pollutants from your atmosphere with its allergen-, virus-, and bacteria-bashing Guardian Air Purification System. Carpets typically dry one hour after the procedure is completed.