What is the best carpet shampooer on the market?

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Resolve Oh my god I had some of the ugliest stains you could imagine on my living room floor I sprayed resolve and used a kitchen sponge to scrub them up it took me about 30 minutes and BAM!! it was done and looks brand new When my husband came home from work he took his shoes off he didnt even want to walk on it it looked Sooooo good