Take your dirty area rug to a clean car wash and give it a good, high-powered blast.
Rug washing does not get any more easy-peasy.
And just in case you were wondering, by clean I mean one that doesn't have mud piles from other peoples dirty cars all over the pavement.
About 5 years ago I purchased a white rug from Ikea. Being a smart one, my next purchase was a can of Scotch Guard. While the Guard has done a wonderful job of making stain removal and spot cleaning easy it doesn't prevent it from getting an overall, grimy feeling. So over the course of it's 5 year life I've given it 3 thorough (meaning more than just a wet rag and a dab of soap on the spots) cleanings. I have learned a much. Mostly, what I will not do again.
The first washing - with a steam cleaner. It cleaned well, but that machine was so hard to maneuver that it actually shifted the rug around. Effective but meh.
The second cleaning - a garden hose and some scrub brushes. Never again.
The third - a car wash. It took 6 minutes, cost $3.50, and left the rug with the fluffy 'new' feeling. GLORIOUS.
Once it was clean we just rolled it back up, put it on trash bags (lack of tarp) in the back of the jeep, and then spread it out in the driveway to bake dry in the sun.
**Just for the record, after every washing I apply another can of Scotch Guard.
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