@irontoenail - All of that can be taken into account by choosing the right organisation to trust in the first place. There are several stores I can name off the top of my head that are dedicated to only sourcing environmentally friendly, ethically sourced items, and they are usually very transparent about the way they go about it.
One of my favorite examples is LUSH (which sells bath products) because they are very cautious about how they source their materials. They were going to phase out palm oil altogether because production of that is such a strain on the environment, but realized doing that would harm small producers, so they made a conscious decision to reduce it and get it from the right places instead. That's the kind of fair trade products that will make a difference in the world.