Here are a couple tips to ease the job.
It may be that a simple dusting will do but if not cleaning window shades can take time and patience. To dust try a dryer sheet of the brush of your vacuum cleaner dusting both sides. If they are really…really dirty get ready for a real cleaning.
The best way is to take them down if possible and put a plastic drop cloth on a table. Place the blinds on the plastic. If they are vinyl use a sponge solution of one-quarter cup white vinegar in a quart of warm water laced with a touch of dishwashing liquid. Wipe down each side with the sponge. Rinse in the bathtub or shower and wipe clean with a soft cloth.
This same method can be used on fabric shades. If you detest the idea of taking the vinyl blinds down be sure to cover the furniture and put a drop cloth on the floor then follow the suggestions above.
If you have wooden blinds wipe both sides with a soft moist cloth followed by an anti-static polish to slow the repetition of dust. For additional tips on cleaning almost anything call Clean World Maintenance toll free 800-643-5850 or visit our website at http://cwminc.com.