I take mine down and put them in the bathtub and add a few drops of dish soap and let them soak for about 10 minutes. Rinse them w/the shower, then take them outside and hang over the porch railing to dry. Dries in about 15 minutes. I would rather do that than stand there and clean each slat.
A duster is the best thing to use to clean mini blinds. I don't know how we'd keep the dust down without one. Those dusters that clean the mini blinds the best go between the individual parts to clean the whole thing, not just the surface.How to clean lime deposits from an aluminum sink?