barteksmrek wrote: How am I supposed to combine with paper towels and improve the producer ...... Yet someone else writes that the filter washes twice a year. Bagless have very small tanks and it is recommended to clean them every second vacuuming.
Attaching an additional paper towel insert can be called improving the manufacturer. And I came up with this idea, not to mess with cleaning or washing the original filter, because the replacement of this insert takes a total of 30-40 seconds. In Devil, the tank is quite spacious, but it is rather emptied after each vacuuming. As I wrote, Devil came to me by accident, because my daughter wanted to throw him out, because he has a poor pull, and in turn I wanted to see how it works in practice, so I took him in. As it was obvious that it was derelict, so in my habit, I took it apart and cleaned (washed) all the filters inside the housing, and washed the original primary filter. For this basic filter, I came up with the idea of winding a layer out of a paper towel. After these treatments, the vacuum cleaner will regain its vigor, when my daughter came and vacuumed it with it, she found that it had a better draft than when it was new. I also immediately stated that it has a much greater thrust than the previously used Cobra (I think) 2000, which is not always possible to get bags in, so the Devil entered service. The more that it is not more troublesome to use than the Cobra.
There is also no such specific smell when vacuuming (I refer to it as the smell of dust, if the dust can smell). This smell was also absent when vacuuming with Zelmer's Aquarius vacuum cleaner, which vacuums very well, but is troublesome to clean after vacuuming.
What I wrote are only my observations, which not everyone can share, let alone encourage them to buy a bagless vacuum cleaner.