N99 and N100 Masks: These provide even higher levels of filtration, with N99 filtering out 99% of airborne particles and N100 filtering up to 99.97%.

Instead, use N95 or N100 mask during a wildfire. Dust masks, bandanas and pieces of cloth won't adequately protect you from inhaling fine particulate matter. Instead, look for an N95 or N100 mask.

N99 and N100 Masks: These provide even higher levels of filtration, with N99 filtering out 99% of airborne particles and N100 filtering up to 99.97%.