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You're not talking about corpse worms? It's like some food that rots for a few days and then there's white bugs, and if that's the case, you just spray some insecticide and do a little bit of hygiene.
It looks like a bean elephant at its best, because the picture is too small to be 100% sure.
This is the larvae of rice moths or rice elephants, first check the grain, grains, dried fungus, etc. at home to see if there are insects. >>>More
This is the larvae of the grain moth, not the maggot, it is estimated that it is the food at home, and the dry goods have worms, go and see.
1. It may be maggots, because the humidity is not often cleaned, and the flies lay and hatch. >>>More
Cockroaches, you can go to the department store and sell cockroach killing medicine, and put it in the corner of the house.