Are soap nuts treated with chemical or pesticides?
Obviously, I can’t speak for all soap nuts grown in the world. But let’s remember that the soap berry produces saponin that is a natural insect repellant. There is no need for any such treatment. Most of the highest quality soap nuts are wild-crafted (grow in the wild), hence only Mother Nature cares for them. As always, stick with well-known, knowledgeable and trusted suppliers to be assured you are receiving properly harvested and stored soap nuts. If soap nuts are plantation grown, it is difficult to know if any fertilizers may have been used. I avoid plantation grown soap nuts.