This is really something that we need to take up with the app developers then; the fact that OSM data is misinterpreted by an app must not lead to falsifying OSM. (Just to be clear, I was not talking about boundaries, but instead adding the "access=private" tag to anything marked as a trail. Of course if people drive their OHV along something that's not even marked as a trail that's another issue... still, knowledge about where these washes are can save lifes in an emergency, and they should not be deleted from OSM just because someone cannot handle the information responsibly.)