Gotta Say, We have a new energy effecient washer and dryer. Didnt think much about it at the time but many things smell dingy/sour as soon as they get damp when worn. Only bleach seems to help but it has to be diluted and added in occasional measured amoints. Bottom Line: “Energy effecient” usually means “Doesn’t Work”
Use white vinegar in the rinse cycle instead of fabric softener. This keeps the dryer in better condition too.
And it costs less.
;-)