Dakota Alert Sensor Cover Attack!

I’ve been using Dakota Alert MURS Alert Transmitter for many years. I’m on my second one, and once again I have an animal (bird probably) attacking the white paper cover in the sensor port.

Questions:

  1. Is it made of special paper?
  2. Can I color it darker to make it less tempting?
  3. Is there a better way to protect the PIR detector?

Many years ago DA sent me some of the paper so I could tape it over the front of the port, but I’m hoping there’s a better fix. Wondering if I’m the only one dealing with this issue.