when I ran out of that brand from Envirocare I got good HEPA packs and gosh OH BOY what's the difference. This Envirocare care pouch didn't close very well, causing dust to fly around in the pouch compartment. Using a store-bought HEPA bag that felt like a soft cloth, I had NO dust in the bag compartment. Although this bag is cheaper, you get what you pay for: a cheap bag that lets some dust into your vacuum and motor.