I had take the neck piece off the rest of the blanket to wash it. when I went to put it back on, of course missy mare had rolled and the velcro was full of hay and dirt.
The zipper was still usable but I wanted to use the velcro also. It would not stick at all the way it was, how to clean it....?
After trying a couple of different horse brushes I spyed the dog slicker brush.
A few swipes with that and the velcro was clean as new!
Since then I have used it on various velcro applications, perfect results every time.