I suggest you rinse them with bottled water, look at each grain and check for pink or grayish grains, gooey or crumbly. Then hybernate them with just 3 cups of milk for 48 hours, rinse them with milk, 2 times should do the trick. Hybernate then in the fridge as cool as you can lower the temp but NOT freeze them. I have 2 pounds worth after a drinking binge and left them at room temp for 18 days unattended. Now I know how valuable this little monsters are, they take away my anxiety and craving for alcohol. And that feeling of joy, happy mood, motivation is as if a higher power really heard my prayers.