Method 1 - Washing Indoors
1. Take the blinds off the window carefully.
2. Open them to their natural size and flatten each row.
3. In a tub full of lukewarm water, soak the blinds for a few hours. This will extract a majority of the dirt.
4. Then, remove the blinds from the tub and place them on the bathroom floor. Scrub each row using a brush and sponge.