When it comes to cleaning vertical blinds, I always recommend doing so by light dusting and using a damp washcloth. That said, with some fabrics, you can use a washing machine on a light/gentle cycle. However, you cannot place them in the dryer, and some materials (such as wood) should never be placed in a washing machine. Keep in mind that even sturdy vertical blinds can become fragile, so use caution and follow the instructions specified from the vertical blinds you purchase.