Gently cut the standard bag immediately on one side and pinch it with three large clerical clips, it will become reusable, three times is definitely enough. economy, however. If you clean up in the garage or where repairs are underway, then a home-made cyclone from an iron bucket will help you, then I don’t know at all when the bag needs to be replaced. Standing vacuum cleaner, I recommend to buy. It is not for nothing that he is the most popular, they are not looking for good from good. Must have.