Select Home Depot Stores: 3M OV AG P100 Professional Multi-Purpose Respirator Expired

I think I should get this to wear when I'm mowing lawn. I have very bad grass allergy and the polls are just starting again 😩

Masks reduce exposure to the virus by trapping them within the filter media.

Most viruses expelled are water born, so as a droplets, bigger than the filter material.holes, and will get trapped.

A single covid virus is Smaller than the holes in the filter materials and can pass through...assuming they navigate the meandering path from front to back of the mask material without getting teams trapped.

Leaks around the edge of masks also let in covid unfiltered.

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Better masks trap more, so reduces the amount of virus you'll breathe. But over time, more and more exposure to the virus means one eventually gets thru your body's defenses, infect you.

Would this work for dust particles when going up in the attic, possibly replacing insulation and cleaning out the attic space?

I do just that. Get some swim goggles too. Seal up the eyes and breathing.

The reason why this works great for that is the unfiltered exhaust port. You can breathe out hard when you exhert yourself.

Test for fit when you put it on. Cover the inputs with your hands and breathe in. It should suction to your face. That means you're good to go

I think I should get this to wear when I'm mowing lawn. I have very bad grass allergy and the polls are just starting again 😩

One thing to keep in mind is that many respirators and some kinds of masks only / primarily filter the intake air -- the stuff in the environment you're breathing in through the mask filters.

Your exhaled air (in some "general trades use" masks / respirators) isn't normally considered hazardous so the masks that are created for protecting YOU from what's OUT THERE may just have exhaust valves that easily let you blow out your exhalations into the environment through the valve so breathing out is easier and doesn't so much "pollute" your filter media. So you're more protected from the room air but others may not be so much protected from YOUR breath.

Hence some people choose masks that filter both inhalation and exhalation for medical safety situations where anyone can be a source of risk to the air safety. I've also seen it done to put a mask / filter inside or outside the respirator covering the exhaust valve or user's nose/mouth so there's a layer of exhalation protection added.

IIRC one of the most significant aspects of COVID masking in theory is actually preventing atmospheric aerosols from contagious people from getting into the air effectively particularly when they cough, sneeze, pant, whatever since those streams can be highly infectious and persistent / distributed in the air.

Healthy people breathing in air are certainly protected from junk in the air to a degree but keeping massive quantities of hyper-infectious stuff OUT of the air at the source (the potentially contagious people wearing masks that protect people FROM their exhaust) is a bigger "win" cutting that down 99.x% at the source.

And if you're especially masking to protect people FROM you then it's even more important to wear a mask that filters strongly your exhalation.

This deal is available again.