I have a separate container just for eggshells and every now and then when it gets pretty full, I smash them into the smallest bits I can and sprinkle them on my flower or vegetable beds. In a few weeks you can't tell they were there anymore. I always thought that they were not only fairly inoffensive but also would be one thing that wouldn't attract vermin. But now I read that they could attract rats? I certainly don't want a rat problem! Should I stop? Helen