I caught my 5-year-old (not T1D) climbing up on a chair to sneak a bunch of muffins I had placed on a high shelf "out of reach." He and the 2-year-old (T1D) ate some of the muffins, though I can't tell exactly who ate what. How do I teach my 5-year-old that sneaking food is not just wrong but also dangerous to his little brother? Right now I told him that since he snuck the food, he can obviously see to his own food needs and I wont make him breakfast. Long-term this does not seem like a viable strategy because if he's hungry that will only spur him to sneak more food. But I'm very concerned because it's very dangerous for the littler one -- he cannot check his blood sugar, and a single muffin unbolused will send his blood sugar into the 600s. I don't know what else to do. Does anyone have any other suggestions? We need to get across how serious this is; we might deal with this differently if diabetes was not in play but it would still be a serious problem.