"I have used lots of masks that let dust through but these are by far the best. I used a wall chaser with no hoover attached and as you can imagine there was dust everywhere. No dust was visible in the mask so what more can you ask for. The previous reviewer must not no how to wear a mask because i had no problems what so ever. will definitely use these again."
"I have used lots of masks some better than others but this is the worst one ever!
Hard to get a good secure fit.
I was working under asbestos soffits luckily only wet wiping down some flaky paint, each time I looked up the mask slipped off my nose! Normally use 3m ones which are fine for fit, but this was no use at all. Had to hold my breath and pull it up each time!"