The first line of defense against dust and dirt on your wooden blinds is your vacuum. To keep wood blinds looking new, vacuum your blinds using the brush attachment at least once a week. If you don't have a brush attachment for your vacuum, a duster designed to trap and hold dust particles performs the same function, although you may want to dust your wood blinds twice a week if you use this method to keep them completely free of dirt and dust.
If a simple vacuum or dust job doesn't seem to keep up with the grime on your wooden blinds, spray a cloth with furniture polish and wipe down your blinds. For maximum benefit, try using a terrycloth or microfiber cloth to help trap dust particles as you dust and polish. If your wood blinds have a lot of built-up grime from grease or ages-old dust, furniture polish tends to work best.
If you're going green with your cleaning, use a simple solution of vinegar and water to clean your blinds. Mix 1/4 cup of regular white vinegar in 1 qt. of water and stir. Once the mixture is prepared, pour a little on a microfiber cloth or terrycloth until it's damp, and wipe down your blinds slat by slat.
If you don't have any specialized cleaners, use a slightly damp cloth to wipe down your wood blinds. Use caution, however, because a too-wet cloth can damage wooden blinds and cause them to warp.