What to do with supplements I don't need?

[animeavatar]

I'm planning on trying the Repashy Calcium Plus and I don't know what to do with my old supplements. Can I feed it to my crickets?

 

[fl_orchidslave]

I donated my supplements to a reptile rescue after switching to Rephasy's. But then had to buy some plain calcium for my females during breeding season to keep a cap of it in their enclosures, due to them eating irregularly.

 

[animeavatar]

I know of a reptile rescue but I'm not sure if they need supplements because they don't have it on their list of things they need.