We have the hay rack already a few weeks in operation, everything was here in the end I said, you have the rack definitely fix the it does not collapse, I've done with 2 screws, one can then not more space-saving stored anywhere but Normally, the rack remains anyway in the barn.
However, what is also, at least, happened in our guinea pigs repeatedly that they throw the rack to because she is very easy and then the hay lying on the ground around. In effect, because of these two points only 4 stars.