I generally wash all my stuff on 40 deg or 30 for delicates or once worn. (60 for sheets, towels etc)
Trouble is my poor DD has a typical sweaty teen problem & despite daily washes/showers & deodorant some of her fav tops don't seem to smell clean, under the arms ...in fact are still pongy when they come out. I've tried smaller loads & hotter temps which help a bit but you can't boil some things. Any ideas or shall I just throw stuff away?