<p>It consists of a bag storage compartment (1 or 1A) placed inside a waste container (2 or 10A). Said bag storage compartment (1) is part of a new waste container (2) with a door (5) to insert the rolled up bags (11) or it is a separate compartment (1A) integrated with the waste container (10A) without lateral side or it consists of a compartment (1A) to be placed on the bottom of an already used waste container (10A).</p>