From SCOPE:
Tannerite has been used for explosive targets for years. These targets can be bought on-line or home-made.
A SCOPE member pointed out something that members should be aware of:
In 2019, Governor Cuomo signed bill S5276a which: “…would prohibit the storage, use or purchase of the explosive Tannerite or similar product sold under a different name without the proper license or other authorization to do so under the provisions of law”.