Well, Sue.....perhaps nothing is gained....Just might make the choice of wash methods a bit easier.
I'm not sure when poly became the batt of choice...knowing if it was poly...not likely to be a blend...
it might handle machine wash better than a cotton. Well.. in the end ,it is a gamble when you aren't
the maker. Any chance you could use a top loading washer ?? Then you could "schloss" by hand and spin
out. Waiting till spring might be good, too.
A long time ago, on a TV program ( I don't remember whose
) the guest was an antique textile collector/restorer
who recommended this mixture and process :
Equal parts of liq. Ivory dish soap and Powdered Clorox 2 ( not liquid !)
dissolved in water as hot as article can stand and enough to cover
it. Put item in, agitate some and let sit several hours...overnight,etc.
Rinse very well...it will take several rinses...then dry. I've never had
it cause a problem and it seems to work well. Some times I have repeated
it before drying. Surprising how good it does on doilies, hankies and other
small things. The powdered Clorox 2 might be hard to find these days and the
liq. just doesn't work.
I never tried it on some thing large or in a washer.....just basin washing.