Rodents love to feed off citrus trees! They are most common an issue in the fall and winter when it gets cold outside they tend to try to go inside the home where its warm.
Make sure to seal any holes in your foundation, walls and floors. Mice can fit into a holes a lot smaller then they are. If the plumbing isn’t properly sealed they can even come up through you bathtub drain and sinks. Once inside rodents can become a real problem. They build nests, you will see droppings(which can carry diseases), they get into food and you can sometimes hear them in the walls and in your attic.