Tea: If you don't like coffee, you can use tea bags instead. Just place 2-3 tea bags inside the confined space. The tea leaves in the bags will not only absorb the trash can smell but will also release the natural aroma of tea.
When it comes to the automatic ones, they will feature a sensor and when you will have a trash bag that will be ten inches above it and at a one hundred and thirty degree angle from it, the trash can will automatically open. If you are using it in normal parameters, then you will be able to use this amazing feature for 6 months until the batteries will run dry. This collapsible trash can works with 4 D-size batteries.