This loses its fill volume, because the bucket on the ground holds a "groove" for the lever mechanism. The lever mechanism leaves to be desired. For me it came after some time to misalignment, causing the lid not let very open. Had to be recalibrated. Misconstruction. The real problem, of which I had read before buying has occurred in my case: The outer edge of the plastic bucket protrudes only slightly above the metal bucket edge. Means with excessive pressure from riding up the plastic bucket in the metal bucket and must be rausgepresst under great effort again. As a user you can maybe adjust it and compress the trash just be careful. However, if - as in my case - guests use the bucket, they can of course not previously warn. So my guest has used the bucket completely normal, which again had the result above. Since it was about the 17th time that I had the bucket again to squeeze, I have the whole thing thrown in the trash and brought a new -anderen-. Fehlkonstruktion!