Wild Gray squirrels in the fall have been observed consuming a fair amount of woodlice, that go by many names, including, sow bugs, pill bugs, rolly pollies, etc. Yet these bugs aren't lice orinsects or, but ignominious terrestrial crustaceans which consume and recycle decaying plant material abundant in the fall, all of which contains high levels of calcium, some of which they retain and some of which they contribute to the growth of trees and other plant forms. Unsurprisingly, the exoskeleton (carapace) of woodlice has been found to contain 24% Calcium carbonate.
Their gut on the other hand has been found to store various heavy metals; how much depends upon whether their habitats are pristine, a dump, or somewhere in between. Gardens and backyards not treated with herbicides and pesticides make this bug a good choice for wilds and even pets in the fall; still it's best to address potential gut parasites and toxins not just in wild sourced bugs, but also those found to be contained in commercial rodent chow sources also.
https://www.amazon.com/Oregons-Wild-...9952033&sr=8-9
This same company also offers MTS liquid Elixer by itself. MTS is a known chelator (remover) of heavy metals, pesticides, GMO and other toxic compounds found in food sources, and from exposure to the enviroment also. (1 needle drop) using a (1 cc / 1 ml) syringe daily.
https://www.amazon.com/Healthy-Orgin.../dp/B00CLYNA14
Pycnogenol (from the cambium living layer of tree bark of the (Pinaster Pine), among its powerful health promoting properties, it also contains tannins that takes the place of wild food tree sources of inner tree bark and acorns, which act as natural deworming compounds.