Dream about thousands of mice signifies filth and dirtiness, either physical or emotional. You need to trust that things will work itself out in the end. You are drifting through life, not knowing where you are headed. Your dream is an evidence for your soul and the feminine aspects of yourself. Perhaps you hope that you are not like a specific person and are making attempts to get rid of those traits within your own self.
Thousands of mice dream hints a time in life where things may have been simpler. You are ready to confront your anger issues. You are feeling stifled. The dream is a message for your daily routine. You are in emotional turmoil.
If you dreamt about thousands of mice:
Being a rather gentle and soulful person, you may find today a little boisterous. But it does also give you the courage to strike up a conversation with someone who has fascinated you for a while. While it may not be love at first sight, you will find that you have so much in common that you feel like you have always known each other.