Vacuum cleaning blinds is fiddly as the blind slats are delicate and you need to get the vacuum cleaner nozzle between them.
The obvious solution is to use your fingers with a soft brush.
The blind cleaner vacuum cleaner attachment takes that solution and adds in the power of your vacuum cleaner.
Slide the vacuum cleaner head along the blind slats, three at a time, fibre pads lift the dust, cleaning both sides of the blind slat at once, and the suction takes the dirt away.
Mini Blind Vac Attachment vacuum cleaner attachment fits most vacuum cleaners except Dyson.