@Horntoad Yes that is exactly what they look like. Are they going to turn into flies, because if they do they are going to be the biggest flues on earth. The kind that might fly off with me! Nevermind me. Just trying to bring some sunlight into this grim subject. Anyway keeping it serious, what are they and will they do harm to my compost? Are they normal or did I do something wrong? More importantly should they stay or should they be served with an eviction notice?