To see a mouse trap in your dream suggests that you need to be more cautious. Be leery of people who want to help you. Alternatively, a mouse trap symbolises ingenuity, insight, and creativity. You need to look at a better way of doing something.
To dream that you are setting a mouse trap indicates that you will outwit your opponents.
To dream that you catch a mouse in a mouse trap suggests that you are being taken advantage of.
