..a good anti-fog coated shield will last well into the winter, with just warm water cleaning...
..once it startes to fail a bit, clean it thoroughly with some windex or such...good strong stuff, then apply rainx, like the instructions say...3 or 4 times over....
..i generally replace my shield with a good one at the beginning of cold weather..
..gonna need a new helmet this time...
..i had two, but i kinda...lost.. one of them..my newest one...