This is a good and very relevant topic for us modellers.
I've battled with dust on models for years, which was particularly bad when I used to collect model ships; one was a sailing ship with loads of deck detail and rigging, others were aircraft carriers with decks loaded with planes and small aircraft tugs etc ... absolute nightmare.
The only true answer I've found that works long term is a glass cabinet with closing doors. That is my long term solution, no dust, no dusting, no damage to surfaces, works a treat. The initial outlay was pricey when I got it a few years back, but it only needs buying once, so is worth getting a nice looking one and you've got it for life. I've not looked back since getting mine.