Deleting sticky by date

We are using our boards to do a brand suggestion/ ideation board that lives for an indefinite amount of time. We post to the board using stickys, we would like stickys posted to the board to be deleted 60 days after they are posted to make room for more stickys, currently it seems our moderators or our posters are going to have to manually delete after 60 days for all our team members.