How does one keep ones Piano dust free?

[Nbg]

Because mine is a real PITA!
I dust it and the next day its covered again. Nothing else in my house is dusty but this just attracts it!
Admittedly its highly polished so its easier to see but even so!

Is there some magic stuff I can put on it so it will repel dust forever or am I dreaming?

is it impossible!

I think the only thing that helps is shutting the lid after playing it.

Thats the bit I mean
Its always put down but it is sooo dusty.