I think it would be fine to re-use the cage as long as your rat passed away of natural causes and not a virus.
I would scrub it down extra good. Use bleach and water and scrub it down and then let it soak in vinegar and hot water to get rid of any smells the cleaning products may have left.
I'm sorry for your loss
I would scrub it down extra good. Use bleach and water and scrub it down and then let it soak in vinegar and hot water to get rid of any smells the cleaning products may have left.
I'm sorry for your loss