If it's pine based, then no, I'd get rid of it. Pine can really mess with their respiratory tracts. I use aspen from Petsmart. It seems to be the highest quality. You can get it from Tractor Supply and Petco, but they sell the same brand and it's bigger chips and dusty. Petsmart's aspen is fine milled and not dusty. Been using it for years.

Dried corn is bad as it can contain a mold that is toxic(aflatoxins). Cooked corn is great and they love it. I usually steam the corn on the cob, break them into largish chunks and hand it out. They have a blast.

In-Shell nuts are also a favorite and it gives them something to do. Not too many brazil nuts though, they contain alot of selenium which isn't good in overdoses.