We have a Panasonic vacuum cleaner that we bought shortly after we got married. It has served us well for many years. Recently though, it has started eating belts. The last pair lasted about a month. Since the first pair of belts lasted nigh on ten years, I can only conclude that cheap knockoffs have entered the supply chain. Also, the belts I have been buying recently have not been coming in genuine Panasonic packaging. Criminently.