The automatic model is sensor controlled and has a lid which quickly opens when the trash bag gets about 10 inches and 130 degree angles from the can's sensor. With normal usage, the power will last about 6 months with 4 D-size batteries. For those that do not require trash bags, the inner bucket can be easily removed and cleaned when the trash is removed and taken out.
Garbage is such a general term that is it difficult for most cleaning and air freshening products to be able to produce a cleaning product for effective garbage odor removal. Trash can smells can permeate anywhere, especially considering that it can contain some of the deadliest and most stubborn smells in one place.