Why? You can only test, rate and make Migros even better if you're logged in.
Not at all easy to mount and ineffective. In the wind then it quietly lets any small flying animal pass through: flies, mosquitoes, ....
This part is absolutely cheap. It doesn't hold like in the pictures and the individual curtain parts don't overlap. So the little critters get through anyway. It's more of a decoration that doesn't look very nice. The difference to the pictures is like day / night.