I was wondering if you could tell me what I should use to clean the inside of my OBO mask…
What you use to clean your mask will depend on how dirty it’s gotten. If you’re cleaning it fairly regularly you can wash and rinse with warm water and an anti-bacterial soap. If it’s pretty grungy I would recommend rinsing the mask thoroughly, then scrubbing it with a gentle plastic brush with something like Fantastic or Formula 409, followed by rinsing and washing again with a an anti-bacterial soap. It’s important that you dry the mask after washing to keep the hardware from rusting and any mold developing.