Rug Doctor who? These carpet cleaners are on sale at Walmart for up to 42% off.

As of March 19, several carpet cleaners are on sale at Walmart for up to 42% off:

• OUR TOP PICK: Bissell ProHeat 2X Revolution Advanced Carpet Cleaner — save $60

• BEST FOR PET MESSES: Hoover Pro Clean Pet Carpet Cleaner — save $70.99

• BEST FOR CARS: Bissell Little Green Portable Spot and Stain Cleaner — save $20.99

Honestly? Carpets and rugs are a little too good at hiding dirt, dust, and debris. (The shag ones are in a league of their own — that retro '70s look is! Not! Worth! It!) Spills are one thing, since you can see the aftermath pretty immediately, but you never really know the extent of the grime that builds up with daily traffic until you get in there with a carpet cleaner. Read more...