You would need to check and see if there are any chemicals in the pellets to inhibit mold, insects, etc.

These would be food, not bedding.

I have put them in the bin but i didn't have a lot
It sounds like a good experiment I wonder if the whole thing would turn soft and goooy

I just dissolved about a cubic yard of those last week! We've been trying to clean out the basement and finally went after the boxes of peanuts that we'd been storing since our wedding. It was a lot of fun watching them dissolve!

Based on how they responded to moisture, I'd expect that they would get goopy and glue-like very quickly. I wouldn't add too many of them!