I had not read anywhere before purchase that this machine isn't for Berber carpet. Upon unpacking and reading the owner's manual, I read "To avoid damage to Berber carpet, avoid repeated strokes in the same area," and also read "Pull trigger to release steam and move machine forward and back over stain for 20 seconds." Every carpeted area in my house has Berber carpet!. So, back in the box to return! I was so disappointed!!! I gave four stars because the info re Berber carpets was not prominently noted in the pre-purchase marketing material. Based on other reviews this machine seems to be close to perfect!