Sorry to bump up an "older" thread but I prefer it to creating a new one on the same topic.
Here in the Detroit-metro area where I am I have to deal with pollen and dust; pretty much the same thing as everyone else! I can wash my Mark VIII in the morning, dry with the Detail Spray and the GWT, and by afternoon I can have a thin film of dust and pollen. I don't yet have the waterless wash (yes I will be ordering it along with a couple waffle towels!), so what I do the next day to remove the dust is to simply use the hose to rinse off, then repeat the drying process with the Detail Spray and the GWT.
Would using the hose to rinse off/remove the dust be an acceptable method? I have a selectable trigger nozzle so I set it on "fan". Would the dust create swirls as it's being pushed away by the water? Just wondering!