Which face masks are the most effective?
A recent study from Duke University used a laser beam to illuminate respiratory droplets through different types of masks as someone put their mouth up against it to speak.
Researchers say the results were surprising.
N-95 masks came out on top as the best defense, but cloth masks with two layers of cloth also ranked high.
Neck gaiters made of athletic material were ranked the worst.
RELATED: Neck gaiters, bandanas more harmful than not wearing a mask, Duke study suggests
