Instruct: Classify Amazon reviews into positive or negative sentiment
Query: i ordered this from amazon and got it in 3 days even with super saver no shipping

the dirt dog is a great time saver and works with my 400 series home base, virtual walls, and remote. we love it, and now i can get a new pet series roomba (my red roomba went to roomba heaven :( after 3 years) for the carpeted areas. the scooba roomba comes next! i don't know why amazon has this under review. i ordered this last week and received it in 3 days even with the super saver shipping. don't be afraid to get the dog. it charges in 3 hours, and parks itself at the home base when the battery runs low. i was worried that it would scratch my bamboo floors, but this nifty dawg just sweeps and no worries about scratches. it runs over an hour on a full charge, but it's still new, so i know that run time will vary. i love it!