PURPOSE: To store watery trash after removing water by placing a net obliquely at the lower part of the trash entry opening of a trash storing box and a waste water receptacle beneath the net, and conducting water out through a waste water hose.

CONSTITUTION: The body 10 of a trash storing unit is fixed to an external wall and a trash entry opening 13 is fitted to the hole at the top 12 of a sink 11. Directly beneath the trash entry opening 13 is placed obliquely a net 17 for removing water and a water receptacle 18 is settled below the net. A waste water hose 19 is connected from the water receptacle 18 to a waste water disposing unit 21 at the lower part of the water bath 20 of the sink 11. With this conformation, watery trash thrown in from the trash entry opening 13 is removed of its water content with the net 17 and thrown down into a trash storing bag 16. Accordingly, it becomes possible to prevent the trash storing bag 16 from standing water and to dispose the removed water through the waste water hose 19.