Enjoyed as a side dish, main dish and even in desserts, rice is a common staple in many households. Rice is a highly nutritious grain that over 3 billion people eat as their main source of food, according to U.S. Rice Producers. Whatever type of rice you prefer, whether it's the long-grain white rice, brown rice or sticky rice, it needs to be stored properly when you bring it home. Large sacks of rice in particular need to be stored away from moisture, which will cause it to spoil. If properly stored, however, unopened bags of rice can last almost indefinitely.
Look at the rice. Sift through the rice to see if there are any maggots or insects in the rice, which is a sure sign of spoiled rice. Spoiled rice can also be discolored.
Smell the rice. Spoiled rice will have a distinct smell that rice should not have. Fresh rice does not have a strong smell.
Touch the rice. If the rice is soft to the touch, it means that it has been exposed to moisture and should not be cooked. Discard it immediately.