well, in this case Brita has to be defended to a point, as after one month or two, it really doesnt filter too much out.
but i think the whole concept that you have to change the whole plastic filter seems to be a waste problem.
its the same with printers, so we should applause my friend, that he came up with this very interesting hack ;)
I researched the web, but there were only drilling methods, or people talking about washing it out, but nobody else on the web used the scientific approach with really putting effort and time into it.