I really hate to open up this can of worms since someone closed the other thread but SOMEONE has some serious misconceptions about something. I'm not sure why the other thread was closed, but whoever closed it can do the same with this. I just had to get this off my chest. Gosh, you closed in my mid-typing too. Spoken like someone who has never handled anhydrous ammonia. Anhydrous ammonia is like propane. Very low boiling temperature and burns the skin on contact. That by itself isn't so bad but it seems to actually seek out moisture. It will dry out anything it comes into contact with like your lungs and eyes. And all in a split second. It is considered one of the most if not THE most dangerous substance used in agriculture. Anhydrous ammonia is generally the refrigerant used in commercial coolers in packing plants and anywhere large scale refrigeration is needed. They don't take the hazard of ammonia lightly at all. ShawnD, don't take this the wrong way, but you have just demonstrated why some substances are illegal to obtain over the counter.