Individual action is unlikely to be effective in this case. For every person that cares enough and is aware enough to boycott these products, there are a thousand other people who either don't know, don't care, or can't afford to take the time and effort to change their behavior over something like this.

If you want to make an impact, look toward political solutions; raise awareness among your friends and family, write to your representatives, send a letter to your local newspaper, etc. etc. The only reason companies are overexploiting these resources is because it's profitable; a small tax or tariff could tip the scales in a much bigger way than your own individual consumer habits ever will.