Becase of everything that I have been trying to do the past few months I have not had a chance to use my BGE. I went to cook steaks on it last night. Opened it and there was mildew in it. The dome and the grate. How should I clean it. I thought I should fire it up to 700 degrees and let it burn for a while. My family says diluted bleach water which does not seem right esp. on the dome. Thanks for the help. I do keep this covered with the Lg. BGE cover.