Krieg says the cold packs contain ammonium nitrate, which can be used in a meth-making method called "shake and bake." It's used as a substitute for anhydrous ammonia.

These cold packs, which we receive sealed and pre-packaged from manufacturers, include ammonium nitrate as an ingredient. Lastly, we store the cold packs in accordance with all safety, security ...

It’s been one week since several tons of ammonium nitrate exploded in Beirut, Lebanon, ... For example, it's in cold packs you can find at your drugstore.

Ammonium nitrate is used as an agricultural fertilizer, to manufacture first aid products such as cold packs, and in explosives for the mining and construction industries, according to the US ...

Ammonium nitrate can be mixed with other substances to make a bomb. It was used in Irish Republican Army (IRA) bombings in London in the 1990s, the 1995 explosion that blew up a federal building ...