Bissell SpotBot

While more expensive than most portable carpet cleaners, the Bissell SpotBot is the top performer in reviews for two main reasons: It does a better job of removing tough stains, and it's the easiest to use. Users love that they can park the SpotBot on a stain and leave its agitating brushes to do the work by itself. The SpotBot's biggest drawback ironically serves as testimony to its effectiveness: areas that have been “Botted” appear cleaner than surrounding carpet, leaving a "crop circle" of contrast. We also find scattered complaints of wet carpets and leakage, although less so than with other small cleaners. While the SpotBot gets better ratings, the Bissell Little Green is less expensive and also gets good reviews, though they aren't as strong.