Even a surgical mask for normal interaction will protect others around you by eliminating you projecting droplets into the environment, you don't need an N95 mask for that. Since it's not actually an airborne virus, the N95 isn't necessary.
In terms of protecting the wearer an N95 is preferred as it will provide a bit more protection then a surgical mask would, but, it does NOTHING to protect your eyes, or you from yourself. ie) unless you excercise good technique the mask isn't going to save you, and, in fact may increase your risk simply because unless you are used to wearing protective gear it increases the number of times you touch your face to readjust the mask. --In addition, I believe that the don't bother with masks rhetoric was fueled in no small part by the reality that there simply doesn't exist enough masks in North America for everybody to have a case of them. Hospitals are running short already. Public figures don't want to create a situation where it's the fucking Purge for people trying to source masks. I'm still waiting for my Jack Daniels Hand Sanitizer though... that'd be dope.
The virus can live for about 3 days on paper/cardboard, or <24hours on copper for example so you can touch a contaminated surface long after it's been contaminated, and then touch your mouth/nose or rub your eyes, and you CAN become ill.
It is very difficult to eliminate 100% of the risk, because it can persist on a fomite for days. Unless everything you bring in to your home can be delivered and then sequestered for 4 days there is risk that when you touch the packaging on that bag of sugar for example that you may be exposed to the virus if the kid stocking shelves happened to cough on it. Because of hoarding, staples are flying off the shelves, and may not have been on the shelf for an hour, let alone 4 days, so the only way to be 100% safe is to treat everything you bring in to your life as contaminated, and knowing that, I know that there is no way I could manage it.
You're going to keep your produce/fruit in quarantine for 4 days? Hard nope.