Now that you mention dogs: the good flea meds ( Frontline, etc.) seem to be almost useless now. I have a lot of conversations with fellow dog owners (only, in person) that are oddly similar to RC forum ich discussions. My memory is damn good for my age; ich just wasn't this big a deal 10-15 years ago. Folks didn't try to manage it then either, they wiped it out; at least in my hobbyist crowd. Velvet was the big worry. I still think a lot of ich reported now is really velvet. Especially when quick and multiple fish losses.