@colleenyoung I can only speak for myself, and what I have seen. The masks I make can be worn over an existing N95 mask, or be worn alone. As some have said, anything is better than nothing. My masks are made from tightly woven 100% cotton fabric. Personally I wash mine in a liquid detergent that also sanitizes, and change out each day. Because I am mostly home all day each day, I do not have the need to change out multiple times a day, like a healthcare provider may have. The masks I do can be autoclaved or sterilized. Storing a used mask not yet washed, is done in a plastic bag. Hope this helps answer your questions.
Ginger

@colleenyoung I’ve been doing a lot of research on the masks. What I have found out is that our home made masks won’t prevent the virus, but they can help with social isolation. Signals people to stay 6’ away. Also, reminds you not to touch your face. It is impossible to find the right filters for the “to-code” masks, anyway.