Just because there are many of them doesn't mean they are all made equally well! I KNOW this bag is better because my bag fills up after one vacuum (to be honest, I have four dogs, a cat, and 2,700 ft of carpet). If it had only happened once, it would be an anomaly. However, every vacuum has left me with an overflowing bag. I'm learning to check the bag before I'm done with the house. Also, I don't vacuum every week or anything absurd like that. I vacuumed every other day. So it's easy for me to rate this vacuum bag better than others. I didn't know the bag could affect the vacuum's efficiency, but now I know
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