Re: How much BTC to have mixed in an address for expenses? And best method?

Some mixer these days claim you'd receive "clean" coin which doesn't trigger their software, although i don't know how true is it.

Since "clean" and "dirty" is defined by whoever makes it up, it's impossible to make such a claim. Here is my list of all clean Bitcoin addresses and here's my list of all dirty Bitcoin addresses. See what I did there?