So these "single-use masks" that typically cost a quid each. I wonder what proportion of people, especially reluctant or resentful mask-wearers:

use them just once
wash their hands before putting them on
never touch the mask material, only the ear loops
remove them by the ear loops only
assiduously follow the disposal rules
wash their hands after taking the mask off
always carry a spare mask
change the mask when it gets moist (which takes about thirty seconds in a shop on a hot day)?

You tell me which ones of those you break and I'll tell you which ones I break...