Miss Pea is no longer grooming herself. Her fur is dirty. Is there anything I can do to help her out? I've been giving her nightly scritches and I clean out her ears every few days because they get full of stuff. That sort of helps her fur stay a little cleaner, but tonight it's dusty all over. I don't want to wipe her with a cloth if I don't have to. Just wondering if there are any tips out there.