While they are not as effective there is a little protection as it can reduce the amount of saliva getting through to you. SARS-CoV-2 can be spat out during normal speech and so anything which reduces saliva amounts coming across will offer some benefit. Eye protection is also key. That's also why they recommend the 1-2 meter distance.Wait until you find out how many people still think face masks (AKA surgical masks) are effective without knowing that it's actually FFP2/N95 or better dust masks (AKA respirators) that are the effective ones.
When it comes to proper protection N95 is good enough. With N100 breathing becomes significantly more difficult.
The R designation means the mask protects against oily particles but that has to do with the industry e.g. pesticides.
Korean doctor's blog about face mask use and reuse. Hot steam is good for sterilisation.
1. Not necessarily have to choose an expensive mask. If you are financially burdened to buy a KF94 mask, a cheap and breathable KF80 mask is sufficient. The most important purpose of wearing a mask is to reduce the amount and velocity of saliva that protrudes when splashing. In order to prevent...
WHO guidance on mask and N95 respirator use:
The Korean doctor also stresses that people not use masks outside. You are very unlikely to catch anything if you keep the distance outside in the open air. Moving air dilutes airborne particles tremendously.
The bleach mat before going inside your home makes a lot of sense. And if you are very worried, follow the AAFP recommendations, change your clothes and shoes in the garage upon returning home and shower before changing into fresh clothes after returning home from essential work where you interact with people. Don't use contacts and use glasses instead.