Have this composter two years ago put into operation and am disappointed from beginning to end. First, the allegedly patented were "sliding / supporting elements" did not exist, it would be no possibility to install this inside the very simple construction container. Second, the two strange white lever have no apparent function me, they jitters loosely in your tank recesses. Third, the connection between the individual elements Kuststoff is disabled: These are highly delicate plastic clips that break already partly during initial assembly, partly dissolve after the first year of use. I have, where possible, replaced with screws, but that is only in the alternative, because .. Fourth, the inferior plastic has cleared after two years of use so that the weak link holes are torn, and the container is disassembled so themselves. Fifth, it is a simple single-walled plastic composter, which one gets in better execution at any hardware store for about 40 to 60 euros.