Yeah I'll probably leave it alone on top of my heater for a few days. Think that'd work? I'm going to clean it later tonight and use just a tiny bit (like a cap full) of bleach mixed with hot water to scrub everything. Rinse a LOT until I don't smell bleach anymore. And I'm gonna use a cheap-o toothbrush to scrub every inch of everything with.
Then leave it to dry on top of my heater should work. And after a few days I'll scrub it again without bleach using super hot water.