For the this method we have been using Tide or Woolite for the spray. If you cannot find that please use the washing method. Alternatively you can lookup solution mixtures online.
Legally we must remind you that no mask can guarantee defense against disease but studies show even a handkerchief will keep out around 20% microns (a N95 will keep out around 95%) so protection is always recommended . As always follow CDC recommendations and protocols. Be well.