Is it ok to clean my humidifier with H2O2?

I got one of those stupid cool mist humidifiers because it was on sale (and top fill). Now I've noticed a little bit of black goop. With my summer time dehumidifier I just dump in some Hydrogen peroxide and call it a day.

If I just dump some H2O2 in my humidifier with the ultrasonic do dad just blast it to bits? Am I about to make diet mustard gas? Should I just buy the bullet and replace it with one that steals the badies out?