Here is a really great story about margarine. My immediate family (mom, dad brother) only have butter, you would never see margarine in our fridge. My extended family especially my grandie (grandmother) is hooked on maragarine and believes in all the benefits and that it is far superior to butter. Anyways our family shares a cabin ( cottage ) and we had left out both butter and margarine. We went for an overnight hike. When we got back to the cabin, the butter was completely gone and the margarine was still on the counter. The rats and/or mice had eaten all the butter but left the margarine untouched. If mice and rats won't eat the toxic margarine, I defiantly won't either. I'll stick to my butter thank you very much.