Check out the before and after pics. I used Oxy Clean/Carpet spot and stain remover and an old Sonicair toothbrush. All dirt and stains are completely gone. It looks like its brand new. The darker areas on the carpet is just the grain of the carpet laying in a different direction... completely spot free, I can't believe it. I will eventually pull out my front seats and completely clean the entire carpet areas. I was planning on getting all new carpets, but now it seems that won't be needed.

After viewing the sized down image I should point out that all the strange waves in the carpet are completely jpeg atrifacts. There is nothing but smooth brand new looking carpet in the full sized image. I'll try to do a cropped sectional picture to show the carpet more clearly.

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