Can this be used on a dryer? Its just outside back foor in covered patio

Thanks for reaching out Eva! Rust-Oleum Stops Rust Protective Enamel Spray Paint can be applied to the exterior of a dryer. Remove all dirt, grease, oil, salt and chemical contaminants by washing the surface with a commercial detergent, or other suitable cleaning method. Rinse with fresh water and allow to thoroughly dry. Remove loose paint and rust with a wire brush or sandpaper. Previously coated surfaces must be sound and in good condition. Smooth, hard, or glossy finishes should be scarified by sanding to create a surface profile. - Rust-Oleum Product Support 6