To paint over ANY surface, without sanding, use a product called 'ESP Easy Surface Prep', available at hardware and paint shops. Wipe on, wipe off and paint in 90 minutes. Works well over enamel paint , without having to sand. SAVES HOURS of work. It was recommended to me by a professional painter.
Easy way to clean your microwave - heat a bowl of water and vinegar for 5 minutes, the steam will dissolve stuck on stains. Simply wipe off. Genius!!!!
Miracle stain remover! Even removes yellow underarm stains on t-shirts.