[Aussie]

Have you removed the Silicon coating from the mask with abrasive cleaner (ie White toothpaste) first?

Doesnt matter how much anti-fog or spit you use it will always fog up until the coating has been fully removed.

If you have well do it again.

I get a new mask and give it a good rub for 5 minutes. Then stick it on my face and breath out through my nose and purposely try and fog it up. You soon see the spots were you have missed. keep on rubbing until your happy with the results

Aussie