Traditional plastic foil lets some light through, but isn't see-through. So you can't look through it to see outside like you can with Squid. Plastic foil also has...
Partially. Squid wasn't developed specifically to darken rooms, but the fabric blocks some light from coming in. The darkest colour (Rock) is the most suitable for...
You can remove dust from Squid with a microfibre cloth or vacuum with a brush. Washing or cleaning with chemicals impairs its stickiness, so this must be avoided...