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.
Trash Can Smell Removal : Trash Can Cleanup: Hose down the can on a sunny day. Pour one gallon of water mixed with three cups of bleach into the rinsed trash can. Agitate the bleach and water mixture in the can. Let it sit for one hour, stirring the bleach every ten minutes. Use a long-handled brush to scrub the sides of the can. Pour out the bleach and water. Be sure you scrub the lid as well. Let the can and lid dry in a sunny spot. The ultraviolet light from the sun kills the odor-causing organisms. Be sure to let the can dry before adding any new trash.