However, some things shouldn't be thrown away for safety reasons and could have a negative impact on you or the environment if not disposed of properly. You aren't going to toss a chemical or a needle in the garbage but what about the rest of the items cluttering your house? No matter when you are doing a little purging of all the stuff you have in your house, I thought I would look into what you can and can't throw away. From batteries to Christmas trees, here are twenty-one things you can't put in a garbage can. 21 Items You Can't Throw Out In Minnesota Gallery Credit: Lauren Wells