To provide a domestic simple device that plays a part in trash reduction, recyclable resource utilization and the like.

A trash can is internally mounted with a partition plate, which separates and stores two types of trash in the single trash can. A change in the partition position P1, P2 can keep a balance with trash generation to create the substantially same timing of sending to the outdoors. Trash bags can be fixed by bag retainers Q1 or Q2 on a lid bottom portion when set in advance, and can be individually removed out from either place.