Hills Biome prescription dog food (Middle River)

Nearly full 25 lbs of dry dog food and a few cans. Hills Biome. **it is opened and not in the correct bag. Had opened the bag and put in dog food container then threw the bag out no knowing we’d have to put our dog down a few days later. If you have to buy this food for your dog you know it’s extremely expensive so I really hate to just throw it out.