Food: Give them a few vegetable leaves every day and cover them. You can also grab some corn flour and feed them (not too much, try not to use rice flour). You can also feed them some bread crumbs and sprinkle them in the box. It is best to change the vegetable leaves every day.
Other precautions: always clean and take out the blackened and hardened dead bread. Breadforms will become winged beetles after peeling several times. Pick out the beetles and put them in another box. This box should be high, and it is best to cover it with a net to prevent them from climbing out or flying out. If they become fake shell worms, they don't have to clean too much to avoid removing things like eggs as excrement. Just take out stale leaves and dead worms.
Extended data:
Tenebrio molitor, also known as breadworm, belongs to COLEOPTERA, Tenebrionidae and Tenebrionidae (Tenebrionidae) in insect taxonomy. Originally from North China, it was introduced from the Soviet Union to in 1950s. The dried Tenebrio molitor contains 30% fat and 50% protein. In addition, it also contains major elements such as phosphorus, potassium, iron, sodium and aluminum and various trace elements. Because the dried Tenebrio molitor larvae contain about 40% protein, 57% pupae and 60% adults, it is known as the "feed treasure house of protein".
References:
Baidu Encyclopedia-Breastworm