I made a pot of ribs for dinner. I forgot to put it away til about 2:30 this morning. The pot was covered. It should still be safe right?

I have purchased a grill cover, but it doesn't work. It is a gas grill and when I light the grill they jump out, but when the grill is off they infest again. The cover hasn't worked and I don't want to put any pesticides on it that could potentially contaminate my food!

now i have barbecue sauce covering the inside top and bottom.. i mean some place an inch thick.. i dont want to use some grease melting chemical, because of the safety of chemicals where i cook.. or is that ok.. ?? any suggestions?? thanks ..