On Feb 13, 9:50*pm, mm wrote:
Two friends are arguing about rags. *One says they have to be all
cotton to work well, and the other says 30 or 60 or 80% cotton and the
rest polyester will work well too.

Who is right?

They need to start collecting rags for a big cleaning job they have
coming up.

I'll let you guess who is the husband and who the wife.

Depends on how the polyester is combined with the cotton. If the
polyester forms the core of the cotton fiber its probably just as good
as cotton. You find this in underwear and sports shirts. If it say
polyester /cotton blend but still feels like cotton it probably OK.

Jimmie