Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for heavy-duty use!

I have a family of seven and three dogs. Therefore, I need a vacuum that can perform. At first I was very happy with this vacuum. It was lightweight and picked up the dirt. After 4 months, I started smelling a burning smell and the vacuum stopped picking up dirt. I checked the belt and cleaned the rotating brush of hair. I put it back together and the vacuum just would not pick up any dirt. I am going to look for something heavy-duty. I got this vacuum cleaner for my mom and she is doing okay with it but they don't have the traffic I do going through the house. This vacuum is okay if you want something lightweight and have a small family.