Hi Aileen, consider soaking some strips of old T shirt/similar material in oil,
even used oil from your local garage will do) and wrapping it around the rollers.
When you have finished using them for the day, wrap the rollers with another piece
of oil soaked material, again an old T shirt, etc pyjamas tops, with long sleeves
make great rolling mill protectors as the arms can be wrapped around the mill! )
You can also add a large plastic bag to cover the lot.
Best wishes Felicity in beautiful West Oz where the blue sky is shining brightly.