It is a horrible idea. What if someone has an adverse reaction to whatever toxin they have in the lock? Administering a chemical dose should never be a “guesstimate”. And that is exactly what this product will do. All just to make a buck or two. You know there will be plenty of yahoos who buy the lock just to cut it open and experience the stink.
I expect this company to go down in flames. I predict a lawsuit within the first year.