Here's an idea that Catherine Young of The Compleat Mother came up with a
few years ago.  In Canada, letters sent to a Member of Parliament do not
require a stamp.  Canadians who receive unsolicited formula in the mail can
send them to either their MP or the Minister of Health, House of Commons,
Ottawa, Ontario, K1A 0A6 with a note explaining their objections to the
practice.  Would this work in other countries?

Jean Geary
Fundraiser, INFACT Canada
http://www.infactcanada.ca