My two young cat (about 1 year) deal literally for hours with it. The herauslugende and moving rods and the rustling cloth are obviously very appealing to the hunting instinct. When a cat raises the bar and holds him, then there is no harm in the first two speed settings you can hear the spinning of the drive barely, only at the highest level it rattles a bit. Unfortunately, the stick goes off again, but I think with a drop of glue is the fix. Great thing, my cats have fun and I even got a good laugh when the two as the loonies jumping around to the thing.
