Top positive review
One person found this helpful
Excellent for the price
on 13 February 2013
These are disposable dust masks which are excellent for the price.
Obviously they won't be as good as dedicated breathing equipment, but they are a million times better than the disposable rubbish my local hardware shop sells.
On removing the mask after striping ancient lath and plaster, you will find a build up of gunk around your nose so I can't say they're 100% effective.
But in general while doing dirty dusty work, you won't be coughing or reeling away from dust clouds.