Discontinue feeding for a couple of weeks to encourage the rodent population to disperse. Though usually once a population is established, it can be very difficult to discourage.
Consider ways to feed without any waste falling to the ground because rodents are attracted to seeds dropped beneath feeders. There are several feeders available that will catch dropped seeds, but most of the catch trays aren’t big enough to really do the job. You may want to look into constructing a large catch tray to place under your feeders that you can clean out or remove each night or that can be hung off the ground. The key is to prevent rodents from getting to any seed. Also, it is important to clean any catch tray that you construct, because bird droppings contaminated with bacteria may survive on the catch tray and cause disease among your birds.
Best of luck!
