Hi my name is Alonso and I'm the owner of Dream Clean it. The best way to clean a blinds is to release the blinds and then after that you gage them when in position. They stay like this or like this right so when them in this position is the best way to clean them. What you do you take cleaning solution for window cleaning or even them any type of soap. You don't put a lot of soap in there and then you add water with a damp with a rag. Soak in the rag and then you remove the dirt or dust what buildup on each one of the blinds individually. Taking your time and making sure that each application you removing the soil what buildup on each blind. Remember one step at a time, take your time.