What is the best freeze-dried/dehydrated treat for SlimCat Interactive?

[nwc]

PetSafe SlimCat Interactive Cat Feeder, Blue - Chewy.com

How many of your cats have one of these? Which freeze-dried/dehydrated product fits best in one of these?

 

[LTS3]

Maybe some of the pellet shaped Vital Essentials freeze dried treats? Pure Bites freeze dried shrimp would fit.

 

[nwc]

Nevermind, I tried some rabbit pellets, and they just bit and attacked the ball until the lid popped off. They always do this shit.

In the mean while, the Kong dog toy seems to last a bit longer. So I may try looking at dog toys, as they may be tougher for a cat to break.