For over a year that I have, except that the adhesive has a little relaxed, and yet I seek the little beast, I have no fault to express. The big plus is that they are magnetized, they cling directly to your box!
I advise all those who are tired of the flake dust in its box. Obviously, the dust will return anyway, but in very small quantities, and time will pass before you have to clean the inside of your computer!