Washing your helmet pads is a good idea. In my experience they tend to get full of salt from sweat during hot rides. If you then get stuck in a deluge rain washes through the pads, dissolves the salt and runs into your eyes making them sting and stream. I've had to stop on a few occasions due to being blinded by salt water in my eyes.
I normally soak them in warm water for a few minutes.
I normally soak them in warm water for a few minutes.