• Stains. Stains can be stubborn, especially on concrete or masonry, but many products are now on the market that make the task easier. First determine the type of stain and its source in order to choose the right cleaner and to prevent future reoccurrences. Use a masonry cleaner (or make your own with one of dozens of “recipes” available online) and let the solution soak for up to an hour. Remove the stain and the cleaner with a stiff bristled brush before rinsing. If the stain remains, follow with a round of liquid soap and another rinse.

• Rust. Whether on a metal fence, outdoor furniture or fixtures such as railing or lighting, rust can be a perpetual problem if not addressed routinely. Remove visible rust with a wire brush or, for painted surfaces, use a rust-removing cleaner. Follow up with an application of steel wool dampened with mineral spirits. Finish by painting on a rust inhibitor according to the manufacturer’s directions.

• Seals. Windows, doorways, vents and other areas where gaps can occur leave a home vulnerable to moisture, pests and energy loss. Be sure to replace worn or damaged caulk or other sealants and to re-inspect these areas annually.

• Mildew. The unsightly growth of mold, mildew or algae can quickly spread across siding and areas where vinyl or other smooth materials are present. To remove it and prevent its quick return, clean and rinse the surface thoroughly. The slightest residue of organic matter can feed mildew, so once the problem is eliminated, keep it at bay with routine cleaning. For areas with adjacent mulch or landscaping beds, keep soil or mulch relatively dry by turning occasionally to prevent mold spores from finding an ideal home from which to spread.