I'll have to remember your hint w/the dishwasher! Too funny! I can picture DH's face when he sees me taking inserts out of it! LMAO!
Actually, I just read it on here the other day and gave it a try and it really seemed to help. I just ran them through once each, no detergents or anything. I think its just that it gets so hot - its hot the whole time unlike a clothes washer that starts to cool off.