No, They did not discontinue mite-fighter technology. They removed the wording from the bag, because of one state's concern about the way it was worded. Go to the nutrena website, click on chickens, click on feather fixer and then ratings and comments. The first question asked is about mite fighter and the company answers. I just bought my second bag yesterday. GCfor those of you using feather fixer -- do you know if they discontinued 'mite-fighter'?