So my 3 year old is learning how to clear off the table after dinner. Napkins and empty juice boxes go in the trash. Well now that she's sick she only wants to drink out of juice boxes... Okay but she can't throw them away when they are not all the way empty. So we're been telling her that when she throws after 1/2 full juice boxes in the trash she's throwing dollars away. That's a big no no in our house. Idk... Do you think a 3 yr old can understand being wasteful?