When it comes to waders I am obviously a heathen. I have never done anything to waders but wear & patch them. Before the breathable waders were being made really tough I wore 4 mm Orvis Guide Weight neoprenes until it got way too warm for them in summer. I do recall having washed a pair of them because of a rather strong smell they developed. before the neoprene was out there I used non breathing Seal Dri and Red ball waders, now you wanna talk about funky waders on a warm day the old Seal Dri's were bad............ Still I didn't clean them.
Other than those Neo's I haven't considered Armor All, turtle wax or anything for my waders