One of the books that I have says that this is a good way to remove the plating from the parts. Apparently the plating reacts with the soil and the canines smell something and they dig the trap up.
You should be able to find it at the hardware store.
I used it to remove the galvanizing from some nuts with large washers forged onto them. I don't know how well it worked as the parts are only spotty. I suspect that I put too many in the acid mix and killed the acid.
For the shiny plating, I think I would use it full strength. I will tell you to do this outside and where the fumes will escape to where the y won't do any harm to anything. Anysteel item close to the fumes is in danger of becoming corroded. The fumes will not help any of the plants either.
You are a smart guy though, you will know where to put it.
