Scratches

Okay, well Sharubi has white stockings on all her legs and they are very hairy. And those two words, hairy and white, well they are just asking for scratches. Sharubi got scratches at my old barn because the paddocks were constantly muddy. I've tried everything to clear it up and most of it is gone, but she's still a little scurfy and oily on her back legs. I've used MTG and Krudbuster. I have even used Desatin (which works amazingly well). But I still don't feel that it is completely cleared up:(. I also wash her legs with Mega-Tek antifungal shampoo which I think definatly helps (but then her feet get wet and if you've the previous posts, "Thrush" and "Shoes" you know my problems with that).
I need to find something that works really well!!!