Heya,
The front spashguards (inside the wheel arch) on my car have started to deteriorate - both had come away from the front bumper as the screw thingies and holes used to attach the damn things had broken/ripped/disappeared - pretty annoying so I just "secured" the passenger side on using some silicon and no more nails..... looks like it's a really good job - very secure and no more flappy, rattling etc.... gonna do the driver one tonight!