Illinois required masks or face coverings in stores May 1. I was able to buy 3 surgical masks at a local drug store for $2 apiece to use until my Amazon order arrived at about half the cost. I am too cheap to throw the mask out after a single use.
Rotate between your three masks. They recommend 3 to 4 days of air drying and any virus on the mask will be destroyed. I’m guessing after a day or two is okay. But I wait three days if I can.
Or - place on a wooden board or hang by a wood clothespin in your oven. They recommend 200 degrees for 30 minutes. I think 170 degrees for 15 minutes is okay.