I wouldn't get too frustrated. I know some people are firm believers in having them "finish" their food immediately. Lilly does that, but Honey has gotten to the point that she would rather savor her food all day. I just leave it there for her. I feed them twice/day. Whatever she leaves at night is picked up and put away until the next morning.

Are you feeding Kia wet food? If so, I can certainly understand why you would have a problem, but with the dry, it shouldn't be. Just don't leave ANY food outside overnight......I learned the hard way and had all sorts of critters coming to visit us.