I haven’t tried that but some people on here say they use shredded paper in the nests. Don’t use newsprint since it stains so bad but other paper should work. At least give it a try since it is free. If it doesn’t work try something else. There are no rules here, just different things to try.
I grow a little impatient when people seem to think that they are unique in the world. Of course they are. Just like everyone else.