This is a brilliant product, it has slowed down my 2 rescue cats' eating speeds from 5 minutes to 20-30 minutes whilst giving them a stimulating activity. They have stopped asking from more food after mealtimes and really enjoy the challenge of the maze. One is 6 months' old and her mum is 18 months' old. The mum was less keen at first but after the third mealtime using the slow feed bowl she realised that it was her only way to get a meal so got properly stuck in. Both use it equally efficiently. It has been smooth sailing ever since. I have attached a video and a photo of them using it for reference. The only negative thing I would say is that the bowl moves around a lot so we have put it on a rubber mat to prevent it from moving too much and this works really well.