Post History
It's harmless. Rinse out anything loose. If you want, add a handfull of gravel, a cup of water, and shake for 10 minutes to get stuff out. A thermos is going to be food grade metal. So the allo...
Answer
It's harmless. Rinse out anything loose. If you want, add a handfull of gravel, a cup of water, and shake for 10 minutes to get stuff out. A thermos is going to be food grade metal. So the allo...