What treats!
I bought a few toys like this to try and help my cat who is stressed because the aggressive foxes in the garden stop him going out and he is board, and over grooming.
The treats don't fall out consistently enough for the cats to be able to work it out. I'm using average size treats, he just keeps digging at the top. Very disappointing, and in this financial difficult time such a waste. I am so fed up of useless products, I've tried calming products with no effect and now this.