When I was rolling the garbage can back in last week, I noticed that the bottom was full of maggots.I just tossed a garbage can for that reason.
We used to have one of those kitchen garbage cans that are opened by a foot pedal. There is some mechanical stuff in the space under the can itself. We live in Waikiki. We keep our kitchen clean and put out roach bait, so we didn't see this one coming. DH saw a cockroach run under the kitchen garbage can and not come out. He shook the can and dozens of roaches ran out. Then he took it out onto the lanai and shook it really well, then sprayed the roaches as they fled. Finally he realized that the roach eggs would hatch and we would have a new generation of roaches, so we tossed the garbage can. We'll never buy a kitchen garbage can with a built in roach hotel.