why mouthwash / rinses don't work for most of us

[ruch]

http://usatoday30.usatoday.com/news/hea ... eath_N.htm

For rinses with sodium chlorite or chlorine dioxide, "products change the chemical composition of odiferous gases so they no longer smell, but underlying bacteria remain potent and continue producing odors"

With rinses which contain zinc, "the zinc ions find the bacteria that produce rancid gases after eating amino acids, then block the amino-acid receptor sites so the bacteria cannot produce gas, Cohen says. After the bacteria die in around 12 hours, they are replaced by new bacteria. Again, it's time to rinse."

i think thoe of us for whom rinses do not just have too much bacteria... and it's impossible to stamp it all out. maybe they get more and more resistant as we try all these ways to get rid of them, and they multiply and get stronger.