A Flight Attendant working a Hawaii - mainland flight reported running out of places to put trash; and commented this happens all the time.

Narrative

Upon landing; I realized that the trash situation was out of control and that there would be no available space to store trash. With time running out; I made the decision to put trash bags in a locked lav rather than leave them in the galley blocking exits. I know that the catering situation [at this airport] has caused numerous problems and complaints from flight attendants all to no avail. There is not a single empty cart on the aircraft to store trash at the start of the flight and things get progressively worse during the flight. Flight attendants do their best to recycle and 'manage' the trash situation; but we cannot predict how much trash the customer brings on board; or how much trash will be generated in flight; and neither can anyone else. Flight attendants have resorted to placing catering items in ovens; trash in lavatories and under seats; overhead bins; etc. Simply put; we are not given any other option. I have also seen trash mixed in carts from which we serve food to passengers; sometimes at the same time. Now; it is my understanding that more catering items are going to be boarded for sale! Where is all this stuff going to go? Flight attendants must be given the proper tools and environment to do their jobs effectively and safely. Telling us to just 'make things work' in an attempt to cut costs is a dangerous precedent to establish.