There are certain things that are harder to dispose of than others. Items like batteries and electronics cannot be thrown away in your regular trash as they can be extremely harmful to the environment ...
Command-delete trashes an item, and command-shift-delete empties the trash. AFAIK, there's no direct-delete keystroke beyond using something like rm in the Terminal.
Robin Murphy of ChirpChirp House Cleaning says the first step to cleaning your trash can is to empty it completely. “Make sure all garbage and debris are removed,” says Murphy. If you need to spray ...