To dream that you are throwing something into a garbage can, suggests that you are getting rid of your old negative habits and unwanted traits.
To dream that you are emptying someone else’s garbage can, foretells that you will be asked to help repair a friend’s reputation.
[1]If the garbage can is empty, you have either done your emotional cleansing or you have yet to begin.
If the garbage can is filled, then your negative feelings, memories, attachments and emotions need to be released. Identify what it is that you are throwing away.
[2]