I use a product called "cab fresh", unfortunatley only available in USA so you would have to order. it has a strong odor but it works you will just need to air out in the spring. Good luck
Different waxes can case dust to stick or settle to the car easier. Some leave like a static cling. Use a california duster and some good detailing spary. I have also found Zaino detracts from dust. I have used it for years and love it. It can be ordered from Kitchener ontario and they ship fast...
I have two plus two 3" polishers. Love them all. Well worth the cost. Have had mine for 10+ years and still going strong. I do some detailing on the side 40-50 cars a year so mine are used lots. Good luck
Meguiars has a bunch of products depending on how bad the paint is. Canadian tire sells some and most Jobbers have some as well. They do work best with a proper orbital polisher. Good luck