The food container has holes that lead to the gears of the central mechanism, so if the user is not careful enough in how they handle it, food can get stuck in the machine's gears and it may not be able to make a full rotation. These holes theoretically exist to prevent moisture accumulation, but I consider it a huge oversight that food ends up in the gears through these holes. Other than that, the container has excellent dosage control and the timer is easy to use, that is if you manage to set it up the first time because the instructions are poorly written; personally, I watched videos on YouTube to understand. I won't hide that I feel a bit anxious every time I set it up to leave.