Hello Smiling and welcome to TSB!
I have a couple of comments about you Organic and GMO concerns and then I wanted to inquire as to what your particular Squirrel situation might be and the role and extent that nuts have in your Squirrels' diet.
First of all, Organic and GMO are not the same. For a dietary component to be labeled as Organic, the USDA has these requires Crop Standards:
1) Land must have had no prohibited substances applied to it for at least 3 years before the harvest of an organic crop.
2) Soil fertility and crop nutrients will be managed through tillage and cultivation practices, crop rotations, and cover crops, supplemented with animal and crop waste materials and allowed synthetic materials.
3) Crop pests, weeds, and diseases will be controlled primarily through management practices including physical, mechanical, and biological controls. When these practices are not sufficient, a biological, botanical, or synthetic substance approved for use on the National List may be used.
4) Operations must use organic seeds and other planting stock when available.
5) The use of genetic engineering, ionizing radiation and sewage sludge is prohibited.
If you know that the Nuts are grown to these Organic standards, it would seem that would be at least a hypothetical advantage to their use!
GMO means Genetically Modified Organism. All Certified Organic foods are required to be non-GMO but that does not mean or even imply that GMOs are "bad" or unhealthy! In the USA, there are only a few crops that have been GMO'd. To my knowledge there are no "crop" nuts that have ever been or currently are GMO'd. (
https://www.fda.gov/media/135274/download ).
I would like to ask you about the age of your Squirrels and whether or not they are captive or wild. A captive Squirrel, whether they are destined for eventual release or will be kept as pets; are totally dependent upon their people to provide for all of their needs and one of the very most important need is for healthy and optimal nutritional support. If your Squirrels are captive Squirrels, would you please describe their diet in detail. Nuts should
never be anything more than a rare treat and there are many accounts of Squirrels that have been raised without ever tasting a nut. A captive Squirrel, once they are weaned should have the mainstay of their diet be quality Rodent Blocks such as Envig (also known as Harlan/Teklad), Mazuri Rat and Mouse Diet or Henry's Heathy Blocks (HHB; these, unlike the other 2 must NOT be free fed and the "average" Squirrel should not have more than 2-3 per day depending on waste and size of the Squirrel). Other dietary supplements can be given and must be given if using HHB. Here is a link to Henry's "Dietary Pyramid" where the most healthy foods (Blocks) are at the bottom of the pyramid and the treats are at the top (nuts!).
Regards,
SamtheSquirrel