You can use these as underarm shields. The pantyliner can be cut to fit. They come in black and white.
I heard this tip on the radio. This would be great for fabrics that stain, or are not washable.
Source: Heard this on a radio show.
ThriftyFun is one of the longest running frugal living communities on the Internet. These are archives of older discussions.
I saw that someone had asked about preventing underarm stains and I just happened to have received Joey Green's Cleaning Magic in the mail.